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Publisher: Elsevier   (Total: 3161 journals)

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Showing 1 - 200 of 3161 Journals sorted alphabetically
Academic Pediatrics     Hybrid Journal   (Followers: 37, SJR: 1.655, CiteScore: 2)
Academic Radiology     Hybrid Journal   (Followers: 25, SJR: 1.015, CiteScore: 2)
Accident Analysis & Prevention     Partially Free   (Followers: 97, SJR: 1.462, CiteScore: 3)
Accounting Forum     Hybrid Journal   (Followers: 28, SJR: 0.932, CiteScore: 2)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 37, SJR: 1.771, CiteScore: 3)
Achievements in the Life Sciences     Open Access   (Followers: 5)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 7)
Acta Astronautica     Hybrid Journal   (Followers: 427, SJR: 0.758, CiteScore: 2)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 2)
Acta Biomaterialia     Hybrid Journal   (Followers: 28, SJR: 1.967, CiteScore: 7)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription   (Followers: 2)
Acta de Investigación Psicológica     Open Access   (Followers: 3)
Acta Ecologica Sinica     Open Access   (Followers: 10, SJR: 0.18, CiteScore: 1)
Acta Haematologica Polonica     Free   (Followers: 1, SJR: 0.128, CiteScore: 0)
Acta Histochemica     Hybrid Journal   (Followers: 3, SJR: 0.661, CiteScore: 2)
Acta Materialia     Hybrid Journal   (Followers: 288, SJR: 3.263, CiteScore: 6)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5, SJR: 0.504, CiteScore: 1)
Acta Mechanica Solida Sinica     Full-text available via subscription   (Followers: 9, SJR: 0.542, CiteScore: 1)
Acta Oecologica     Hybrid Journal   (Followers: 12, SJR: 0.834, CiteScore: 2)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription  
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 2, SJR: 0.307, CiteScore: 0)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 1, SJR: 1.793, CiteScore: 6)
Acta Poética     Open Access   (Followers: 4, SJR: 0.101, CiteScore: 0)
Acta Psychologica     Hybrid Journal   (Followers: 27, SJR: 1.331, CiteScore: 2)
Acta Sociológica     Open Access   (Followers: 1)
Acta Tropica     Hybrid Journal   (Followers: 6, SJR: 1.052, CiteScore: 2)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 3, SJR: 0.374, CiteScore: 1)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 2)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 3, SJR: 0.344, CiteScore: 1)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 1)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 7, SJR: 0.19, CiteScore: 0)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 3)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 8)
Acute Pain     Full-text available via subscription   (Followers: 15, SJR: 2.671, CiteScore: 5)
Ad Hoc Networks     Hybrid Journal   (Followers: 11, SJR: 0.53, CiteScore: 4)
Addictive Behaviors     Hybrid Journal   (Followers: 17, SJR: 1.29, CiteScore: 3)
Addictive Behaviors Reports     Open Access   (Followers: 8, SJR: 0.755, CiteScore: 2)
Additive Manufacturing     Hybrid Journal   (Followers: 11, SJR: 2.611, CiteScore: 8)
Additives for Polymers     Full-text available via subscription   (Followers: 23)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 174, SJR: 4.09, CiteScore: 13)
Advanced Engineering Informatics     Hybrid Journal   (Followers: 12, SJR: 1.167, CiteScore: 4)
Advanced Powder Technology     Hybrid Journal   (Followers: 17, SJR: 0.694, CiteScore: 3)
Advances in Accounting     Hybrid Journal   (Followers: 9, SJR: 0.277, CiteScore: 1)
Advances in Agronomy     Full-text available via subscription   (Followers: 16, SJR: 2.384, CiteScore: 5)
Advances in Anesthesia     Full-text available via subscription   (Followers: 28, SJR: 0.126, CiteScore: 0)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 2)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 10, SJR: 0.992, CiteScore: 1)
Advances in Applied Mechanics     Full-text available via subscription   (Followers: 11, SJR: 1.551, CiteScore: 4)
Advances in Applied Microbiology     Full-text available via subscription   (Followers: 24, SJR: 2.089, CiteScore: 5)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 14, SJR: 0.572, CiteScore: 2)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4, SJR: 2.61, CiteScore: 7)
Advances in Botanical Research     Full-text available via subscription   (Followers: 2, SJR: 0.686, CiteScore: 2)
Advances in Cancer Research     Full-text available via subscription   (Followers: 32, SJR: 3.043, CiteScore: 6)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 9, SJR: 1.453, CiteScore: 2)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 1.992, CiteScore: 5)
Advances in Cell Aging and Gerontology     Full-text available via subscription   (Followers: 4)
Advances in Cellular and Molecular Biology of Membranes and Organelles     Full-text available via subscription   (Followers: 14)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 28, SJR: 0.156, CiteScore: 1)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 10, SJR: 0.713, CiteScore: 1)
Advances in Chronic Kidney Disease     Full-text available via subscription   (Followers: 10, SJR: 1.316, CiteScore: 2)
Advances in Clinical Chemistry     Full-text available via subscription   (Followers: 26, SJR: 1.562, CiteScore: 3)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 20, SJR: 1.977, CiteScore: 8)
Advances in Computers     Full-text available via subscription   (Followers: 14, SJR: 0.205, CiteScore: 1)
Advances in Dermatology     Full-text available via subscription   (Followers: 15)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 13)
Advances in Digestive Medicine     Open Access   (Followers: 11)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 7)
Advances in Drug Research     Full-text available via subscription   (Followers: 26)
Advances in Ecological Research     Full-text available via subscription   (Followers: 44, SJR: 2.524, CiteScore: 4)
Advances in Engineering Software     Hybrid Journal   (Followers: 29, SJR: 1.159, CiteScore: 4)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 8)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 48, SJR: 5.39, CiteScore: 8)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 1)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 9)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 61, SJR: 0.591, CiteScore: 2)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 17)
Advances in Genetics     Full-text available via subscription   (Followers: 19, SJR: 1.354, CiteScore: 4)
Advances in Genome Biology     Full-text available via subscription   (Followers: 10, SJR: 12.74, CiteScore: 13)
Advances in Geophysics     Full-text available via subscription   (Followers: 6, SJR: 1.193, CiteScore: 3)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 24, SJR: 0.368, CiteScore: 1)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 12, SJR: 0.749, CiteScore: 3)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 23)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2, SJR: 0.193, CiteScore: 0)
Advances in Immunology     Full-text available via subscription   (Followers: 36, SJR: 4.433, CiteScore: 6)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 10, SJR: 1.163, CiteScore: 2)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 2, SJR: 1.938, CiteScore: 3)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 6, SJR: 0.176, CiteScore: 0)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 3)
Advances in Life Course Research     Hybrid Journal   (Followers: 8, SJR: 0.682, CiteScore: 2)
Advances in Lipobiology     Full-text available via subscription   (Followers: 1)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 8)
Advances in Marine Biology     Full-text available via subscription   (Followers: 18, SJR: 0.88, CiteScore: 2)
Advances in Mathematics     Full-text available via subscription   (Followers: 11, SJR: 3.027, CiteScore: 2)
Advances in Medical Sciences     Hybrid Journal   (Followers: 7, SJR: 0.694, CiteScore: 2)
Advances in Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Microbial Physiology     Full-text available via subscription   (Followers: 4, SJR: 1.158, CiteScore: 3)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 23)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 8)
Advances in Molecular Toxicology     Full-text available via subscription   (Followers: 7, SJR: 0.182, CiteScore: 0)
Advances in Nanoporous Materials     Full-text available via subscription   (Followers: 4)
Advances in Oncobiology     Full-text available via subscription   (Followers: 2)
Advances in Organ Biology     Full-text available via subscription   (Followers: 2)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 17, SJR: 1.875, CiteScore: 4)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 7, SJR: 0.174, CiteScore: 0)
Advances in Parasitology     Full-text available via subscription   (Followers: 5, SJR: 1.579, CiteScore: 4)
Advances in Pediatrics     Full-text available via subscription   (Followers: 25, SJR: 0.461, CiteScore: 1)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 12)
Advances in Pharmacology     Full-text available via subscription   (Followers: 16, SJR: 1.536, CiteScore: 3)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 0.574, CiteScore: 1)
Advances in Phytomedicine     Full-text available via subscription  
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3, SJR: 0.109, CiteScore: 1)
Advances in Plant Biochemistry and Molecular Biology     Full-text available via subscription   (Followers: 10)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 5)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 19)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 20, SJR: 0.791, CiteScore: 2)
Advances in Psychology     Full-text available via subscription   (Followers: 65)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 6, SJR: 0.371, CiteScore: 1)
Advances in Radiation Oncology     Open Access   (Followers: 1, SJR: 0.263, CiteScore: 1)
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 3, SJR: 0.101, CiteScore: 0)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 6)
Advances in Space Research     Full-text available via subscription   (Followers: 413, SJR: 0.569, CiteScore: 2)
Advances in Structural Biology     Full-text available via subscription   (Followers: 5)
Advances in Surgery     Full-text available via subscription   (Followers: 12, SJR: 0.555, CiteScore: 2)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 34, SJR: 2.208, CiteScore: 4)
Advances in Veterinary Medicine     Full-text available via subscription   (Followers: 19)
Advances in Veterinary Science and Comparative Medicine     Full-text available via subscription   (Followers: 15)
Advances in Virus Research     Full-text available via subscription   (Followers: 5, SJR: 2.262, CiteScore: 5)
Advances in Water Resources     Hybrid Journal   (Followers: 49, SJR: 1.551, CiteScore: 3)
Aeolian Research     Hybrid Journal   (Followers: 6, SJR: 1.117, CiteScore: 3)
Aerospace Science and Technology     Hybrid Journal   (Followers: 361, SJR: 0.796, CiteScore: 3)
AEU - Intl. J. of Electronics and Communications     Hybrid Journal   (Followers: 8, SJR: 0.42, CiteScore: 2)
African J. of Emergency Medicine     Open Access   (Followers: 6, SJR: 0.296, CiteScore: 0)
Ageing Research Reviews     Hybrid Journal   (Followers: 11, SJR: 3.671, CiteScore: 9)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 470, SJR: 1.238, CiteScore: 3)
Agri Gene     Hybrid Journal   (Followers: 1, SJR: 0.13, CiteScore: 0)
Agricultural and Forest Meteorology     Hybrid Journal   (Followers: 17, SJR: 1.818, CiteScore: 5)
Agricultural Systems     Hybrid Journal   (Followers: 31, SJR: 1.156, CiteScore: 4)
Agricultural Water Management     Hybrid Journal   (Followers: 43, SJR: 1.272, CiteScore: 3)
Agriculture and Agricultural Science Procedia     Open Access   (Followers: 4)
Agriculture and Natural Resources     Open Access   (Followers: 3)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 58, SJR: 1.747, CiteScore: 4)
Ain Shams Engineering J.     Open Access   (Followers: 5, SJR: 0.589, CiteScore: 3)
Air Medical J.     Hybrid Journal   (Followers: 6, SJR: 0.26, CiteScore: 0)
AKCE Intl. J. of Graphs and Combinatorics     Open Access   (SJR: 0.19, CiteScore: 0)
Alcohol     Hybrid Journal   (Followers: 12, SJR: 1.153, CiteScore: 3)
Alcoholism and Drug Addiction     Open Access   (Followers: 11)
Alergologia Polska : Polish J. of Allergology     Full-text available via subscription   (Followers: 1)
Alexandria Engineering J.     Open Access   (Followers: 2, SJR: 0.604, CiteScore: 3)
Alexandria J. of Medicine     Open Access   (Followers: 1, SJR: 0.191, CiteScore: 1)
Algal Research     Partially Free   (Followers: 10, SJR: 1.142, CiteScore: 4)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 2)
Allergologia et Immunopathologia     Full-text available via subscription   (Followers: 1, SJR: 0.504, CiteScore: 1)
Allergology Intl.     Open Access   (Followers: 5, SJR: 1.148, CiteScore: 2)
Alpha Omegan     Full-text available via subscription   (SJR: 3.521, CiteScore: 6)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 10, SJR: 0.201, CiteScore: 1)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 52, SJR: 4.66, CiteScore: 10)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 4, SJR: 1.796, CiteScore: 4)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 4, SJR: 1.108, CiteScore: 3)
Ambulatory Pediatrics     Hybrid Journal   (Followers: 6)
American Heart J.     Hybrid Journal   (Followers: 57, SJR: 3.267, CiteScore: 4)
American J. of Cardiology     Hybrid Journal   (Followers: 61, SJR: 1.93, CiteScore: 3)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 44, SJR: 0.604, CiteScore: 1)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 11)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 13, SJR: 1.524, CiteScore: 3)
American J. of Human Genetics     Hybrid Journal   (Followers: 34, SJR: 7.45, CiteScore: 8)
American J. of Infection Control     Hybrid Journal   (Followers: 29, SJR: 1.062, CiteScore: 2)
American J. of Kidney Diseases     Hybrid Journal   (Followers: 35, SJR: 2.973, CiteScore: 4)
American J. of Medicine     Hybrid Journal   (Followers: 48)
American J. of Medicine Supplements     Full-text available via subscription   (Followers: 3, SJR: 1.967, CiteScore: 2)
American J. of Obstetrics and Gynecology     Hybrid Journal   (Followers: 231, SJR: 2.7, CiteScore: 4)
American J. of Ophthalmology     Hybrid Journal   (Followers: 66, SJR: 3.184, CiteScore: 4)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 5, SJR: 0.265, CiteScore: 0)
American J. of Orthodontics and Dentofacial Orthopedics     Full-text available via subscription   (Followers: 6, SJR: 1.289, CiteScore: 1)
American J. of Otolaryngology     Hybrid Journal   (Followers: 25, SJR: 0.59, CiteScore: 1)
American J. of Pathology     Hybrid Journal   (Followers: 29, SJR: 2.139, CiteScore: 4)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 28, SJR: 2.164, CiteScore: 4)
American J. of Surgery     Hybrid Journal   (Followers: 39, SJR: 1.141, CiteScore: 2)
American J. of the Medical Sciences     Hybrid Journal   (Followers: 12, SJR: 0.767, CiteScore: 1)
Ampersand : An Intl. J. of General and Applied Linguistics     Open Access   (Followers: 7)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.144, CiteScore: 3)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 63, SJR: 0.138, CiteScore: 0)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 20, SJR: 0.411, CiteScore: 1)
Anales de Cirugia Vascular     Full-text available via subscription   (Followers: 1)
Anales de Pediatría     Full-text available via subscription   (Followers: 3, SJR: 0.277, CiteScore: 0)
Anales de Pediatría (English Edition)     Full-text available via subscription  
Anales de Pediatría Continuada     Full-text available via subscription  
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 5, SJR: 4.849, CiteScore: 10)
Analytica Chimica Acta     Hybrid Journal   (Followers: 44, SJR: 1.512, CiteScore: 5)
Analytica Chimica Acta : X     Open Access  
Analytical Biochemistry     Hybrid Journal   (Followers: 198, SJR: 0.633, CiteScore: 2)
Analytical Chemistry Research     Open Access   (Followers: 12, SJR: 0.411, CiteScore: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 14)
Anesthésie & Réanimation     Full-text available via subscription   (Followers: 2)
Anesthesiology Clinics     Full-text available via subscription   (Followers: 23, SJR: 0.683, CiteScore: 2)
Angiología     Full-text available via subscription   (SJR: 0.121, CiteScore: 0)
Angiologia e Cirurgia Vascular     Open Access   (Followers: 1, SJR: 0.111, CiteScore: 0)
Animal Behaviour     Hybrid Journal   (Followers: 206, SJR: 1.58, CiteScore: 3)
Animal Feed Science and Technology     Hybrid Journal   (Followers: 5, SJR: 0.937, CiteScore: 2)

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Similar Journals
Journal Cover
Advanced Powder Technology
Journal Prestige (SJR): 0.694
Citation Impact (citeScore): 3
Number of Followers: 17  
 
  Hybrid Journal Hybrid journal (It can contain Open Access articles)
ISSN (Print) 0921-8831 - ISSN (Online) 1568-5527
Published by Elsevier Homepage  [3161 journals]
  • Full title (Editorial Board Members)
    • Abstract: Publication date: July 2019Source: Advanced Powder Technology, Volume 30, Issue 7Author(s):
       
  • Inside Front Cover (Aims & Scope, Editors)
    • Abstract: Publication date: July 2019Source: Advanced Powder Technology, Volume 30, Issue 7Author(s):
       
  • Structural changes of fullerite C60/70 during mechanosynthesis of copper
           and iron based composites
    • Abstract: Publication date: Available online 18 May 2019Source: Advanced Powder TechnologyAuthor(s): N.S. Larionova, R.M. Nikonova, V.I. Lad'yanov, A.L. Ul'yanov, K.G. Mikheev The structural changes of fullerite C60/70 during mechanosynthesis of composites Me-25 at%C60/70 (Me = Cu, Fe) have been studied by X-ray diffraction analysis and Raman spectroscopy. It is found that depending on the milling time and carbon affinity for metal, partial or complete disordering of the fullerite C60/70 crystalline structure and destruction of fullerene molecules take place. Their deformation stability determines the sequence of solid-phase reactions in the investigated systems. The local atomic environment in the Fe-C60/70 has been studied by Möessbauer spectroscopy. It is shown that the mechanism of the phase formation in the Fe-C60/70 is as follows: the Fe3C carbide is crystallized from an amorphous phase Am(Fe-C).Graphical abstractGraphical abstract for this article
       
  • Formation of drug-loaded nanoemulsions in stirred media mills
    • Abstract: Publication date: Available online 17 May 2019Source: Advanced Powder TechnologyAuthor(s): Julia Felicitas Schwendner, Christoph Konnerth, Stefan Romeis, Jochen Schmidt, Wolfgang Peukert The feasibility of stirred media mills for the production of nanoemulsions loaded with active pharmaceutical ingredients (API) using plant oils as disperse phase and different types of the non-ionic emulsifier polysorbate is demonstrated. The influence of the emulsion formulation, namely oil type, surfactant and surfactant-to-oil-weight-ratio (SOR) on the product droplet size at constant stressing conditions is studied in detail. At similar stressing conditions and SOR, the type of the used plant oil and surfactant did not influence the product droplet size and the smallest achievable median droplet size was 20 nm. The API saturated oil phases and the pure oil phases exhibit similar viscosities, emulsification kinetics and final product droplet sizes, i.e. no influence of the API on the emulsification process could be identified. However, a strong dependency of the emulsion droplet size on the SOR has been observed. Moreover, very good long-term stabilities could be achieved for the obtained emulsions. A release test with fenofibrate-loaded peanut oil-polysorbate 80-water nanoemulsions showed remarkably fast drug distribution as compared to a formulation containing the same amount of the non-dissolved micronized drug.Graphical abstractGraphical abstract for this article
       
  • Hydrocracking and hydrodesulfurization of diesel over zeolite
           beta-containing NiMo supported on activated red mud
    • Abstract: Publication date: Available online 17 May 2019Source: Advanced Powder TechnologyAuthor(s): Mitra Ebrahiminejad, Ramin Karimzadeh NiMo nanocatalysts supported on activated red mud with different zeolite beta contents were successfully prepared by impregnation technique. Their hydrocracking and hydrodesulfurization activities were evaluated with two different kinds of diesel feed (iso diesel and heavy diesel) in a fixed bed reactor at ambient pressure and 500 °C. Physico-chemical properties of synthesized samples were characterized using the methods of XRF, XRD, FESEM, BET, FTIR and NH3-TPD. The results indicated that zeolite incorporation resulted in a significant increase in specific surface area (BET result) and acidic strength (TPD result) of nanocatalysts. FESEM analysis confirmed that the particles size of zeolite-containing NiMo/ARM was less than 100 nm and the average size of particles was about 30 nm. Hydrocracking results illustrated that incorporation of zeolite beta improved cracking activity considerably. In addition, NiMo nanocatalyst containing 37.5 wt% of zeolite had the highest yields of desirable products (naphtha, kerosene and diesel) and the highest conversion. Moreover, the flash point and viscosity of the liquid product decreased notably the nanocatalysts with 37.5 wt% and 12.5 wt% of zeolite were able to remove approximately 96% and 72% of the sulfur content of iso diesel and heavy diesel, respectively.Graphical abstractIn the present study, zeolite beta-modified NiMo nanocatalysts supported on activated red mud were prepared by impregnation technique as a novel catalysts for hydrocracking and hydrodesulfurization processes. The prepared samples were characterized by XRF, XRD, FESEM, BET, FTIR and NH3-TPD techniques. The zeolite addition resulted in that the size of particles remarkably was decreased. Also, after zeolite loading, surface area and acidity of NiMo nanocatalysts were significantly enhanced. The catalytic performance results showed that the highest hydrocracking activity was obtained over the nanocatalyst containing 37.5 wt% of zeolite. In addition, hydrodesulfurization results demonstrated that after zeolite addition, the sulfur levels in liquid products were considerably reduced and the nanocatalysts containing 37.5 wt% and 12.5 wt% of zeolite presented the highest activity in HDS of iso diesel and heavy diesel, respectively.Graphical abstract for this article
       
  • Numerical simulation of particulate cake formation in cross-flow
           microfiltration: Effects of attractive forces
    • Abstract: Publication date: Available online 17 May 2019Source: Advanced Powder TechnologyAuthor(s): Junta Nishitani, Yasushi Mino, Hideto Matsuyama We present a two-dimensional simulation model to explore cake formation in cross-flow filtration. The model uses the lattice Boltzmann method (LBM) for fluid computation and the discrete element method (DEM) for particle computation; they were fully coupled with the smoothed profile method. We verified our model by simulating filtration under different transmembrane pressures. We then investigated the effects of attractive forces and particle concentration on the cake formation mechanism. Generally, as the attractive interaction and particle concentration increased, the particles formed a cake layer with a looser body and rough surface, due to the decrease in the mobility of the particles in contact with the cake surface. It is concluded that the effects of particle concentration are affected by the different conditions of attractive interactions between the particles.Graphical abstractGraphical abstract for this article
       
  • Predicting porosity of binary mixtures made out of irregular nonspherical
           particles: Application to natural sediments
    • Abstract: Publication date: Available online 15 May 2019Source: Advanced Powder TechnologyAuthor(s): Ammar El-Husseiny, Tiziana Vanorio, Gary Mavko Predicting porosity or packing density of sediments made of coarse and fine components of arbitrary geometry is critical to many science and engineering applications. Well-established analytical models for packing of spheres express porosity of the binary mixture as a function of fine-to-coarse particle size ratio. Nevertheless, the applicability of such model to natural granular materials is limited given the nonspherical and irregular nature of the particles whose packing depends on both particle size and shape. The objective of this study is to develop a model that predicts the porosity of binary mixtures made up of irregular nonspherical particles. We modified a previously developed linear sphere-packing model so that it takes into account the effect of both the particle size and shape. As an input, the modified model uses the coarse-to-fine particles specific surface area ratio instead of using the particle size ratio required by the sphere-packing model. We tested the modified model by predicting the porosities of a binary mixture composed of coarse and fine calcite aggregates. We further validate the model by using published data on the porosity of binary mixtures made of synthesized, cubical and cylindrical particles. Our model predictions show good agreement with the measured porosity.Graphical abstractGraphical abstract for this article
       
  • 0D/2D Z-scheme heterojunctions of g-C3N4 quantum dots/ZnO nanosheets as a
           highly efficient visible-light photocatalyst
    • Abstract: Publication date: Available online 15 May 2019Source: Advanced Powder TechnologyAuthor(s): Qian Fang, Bo Li, Yuan-Yuan Li, Wei-Qing Huang, Wei Peng, Xiaoxing Fan, Gui-Fang Huang Constructing Z-scheme heterojunctions comprising of constituents with different dimensionality is an effective strategy to spatially separate electron and hole. To fully utilize the synergistic coupling effect of dimensionality, herein, we first immobilize g-C3N4 quantum dots (CNQDs) onto ZnO nanosheets with oxygen vacancies (OV-ZnO) to create a 0D/2D hybrid via a facile and cost-effective approach. The CNQDs/OV-ZnO heterojunctions display CNQDs content-dependent performance in visible-light photocatalytic activity. The optimal CNQDs/OV-ZnO heterojunction exhibits high photocatalytic activity for degradation of methyl blue and bisphenol A, where the kinetic constant is 11.4 and 32.5 fold of pure OV-ZnO, respectively. Photoluminescence, electrochemical impedance spectroscopy and photocurrent verify that the photogenerated electron-hole pairs in this 0D/2D Z-scheme heterojunction have been effectively separated. The enhanced photocatalytic activity could be attributed to the synergistic effect of efficient Z-scheme charge separation, highly dispersed 0D CNQDs, coordinating sites of 2D OV-ZnO nanosheets and the strong coupling between them. In addition, the 3D flower-like structure constructed by 2D nanosheets greatly inhibits the leaching and loss of the photocatalyst in the recycling process, and ensures the high recycling ability of CNQDs/OV-ZnO. This work paves the way toward designing novel visible-light 0D/2D photocatalysts in the application of solar energy.Graphical abstractGraphical abstract for this article
       
  • Preparation of a novel type of flame retardant diatomite and its
           application in silicone rubber composites
    • Abstract: Publication date: Available online 14 May 2019Source: Advanced Powder TechnologyAuthor(s): Chenyang Zhang, Jincheng Wang, Shiqiang Song A novel strategy was used for preparation of flame retardant based on biomass debris to improve the flame retardant property of silicone rubber (SR). [(6-oxido-6H-dibenz[c,e][1,2]oxaphosphorin-6-yl)methyl]butanedioic acid (DDP) was used to modify diatomite by esterification method, and DDP@diatomite was obtained. The structure and morphology of this novel additive was identified using Fourier transform infrared spectroscopy (FTIR), Brunner-Emmet-Teller (BET) measurements, and X-ray photoelectron spectroscopy (XPS) together with scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDXS) techniques. Thermogravimetric (TG) analysis was performed to evaluate the thermal degradation behaviors of diatomite and DDP@diatomite. This novel additive was applied into silicone rubber (SR) composites. Combustion parameters, including heat release rate (HRR), total heat release (THR), smoke production rate (SPR), carbon monoxide (CO), peak smoke production rate (PSPR), peak carbon monoxide (PCO) and vertical burning time, were characterized by cone calorimeter and vertical burning tests. Results indicated that this flame retardant can reduce fire risk and toxicity effectively. TG and X-ray diffraction (XRD) patterns of SR and its composites were also investigated. The inexpensive property of modified diatomite could also expand its fire safe applications.Graphical abstractGraphical abstract for this article
       
  • The core-shell structured Fe-based amorphous magnetic powder cores with
           excellent magnetic properties
    • Abstract: Publication date: Available online 11 May 2019Source: Advanced Powder TechnologyAuthor(s): Bang Zhou, Yaqiang Dong, Lei Liu, Qiang Chi, Yiqun Zhang, Liang Chang, Fengqin Bi, Xinmin Wang The Fe-based soft magnetic amorphous powder cores (AMPCs) with excellent comprehensive magnetic properties were successfully designed and fabricated using the core-shell structured FeSiBCCr/TiO2 composite powders. The influence of the concentration of water (H2O) for the magnetic performance of the AMPCs has been systematically studied based on careful analysis of the process of nucleation and growth of TiO2 under different H2O concentration in the reaction system. The growth process for the TiO2 coating layer with the H2O concentration in the range of 0.01–0.02 ml/g corresponds to the heterogeneous nucleation phase, while the mixing phase of heterogeneous and homogeneous nucleation occurs when the concentration of H2O increases to 0.03 ml/g. Optimized soft magnetic properties have been achieved for the AMPCs with H2O concentration of 0.02 ml/g, including high permeability of 81.5 with a high frequency stability up to 10 MHz, high quality factor of 102 at 530 kHz, low core loss of 42 mW/cm3 at 500 kHz for Bm = 0.01 T, and better DC-bias property of 52% at a bias field of 100 Oe due to the uniform and proper thickness insulation coating layer, which can be used to produce miniature magnetic components for applications in medium and high-frequency fields.Graphical abstractGraphical abstract for this article
       
  • Stage-wise characterization of the high shear granulation process by
           impeller torque changing rate
    • Abstract: Publication date: Available online 11 May 2019Source: Advanced Powder TechnologyAuthor(s): Chia-Yi Lin, Hsu-Chen Wang, Wan-Yi Hsu, An-Ni Huang, Hsiu-Po Kuo Fine cornstarch powders are wet granulated in a lab-scale high shear granulator. The torque required for maintaining the impeller passing through the bed with a constant rotating speed is monitored during the continuous binder addition granulation process. A new method is proposed to identify 6 stages during the granulation process based on the fraction of the positive impeller torque changing rate in a characteristic period of time. The morphologies and the behavior of the bed are found intrinsically different in the identified 6 stages. The influence of the impeller blade inclined angle on the impeller torque in each stage is initially reported. The impeller with planner 45° blades requires higher torques in Stages I and II due to the overall powder bed mass loading. The impeller with steeper 60° blades requires higher torques in Stages III and IV due to the higher collision frequencies between the blade and granules. The suitable granulation liquid binder to solid powder mass ratio can be readily identified in Stages II and III, and its range is found to increase with the increasing of the impeller rotational speed and is independent to the blade inclined angle.Graphical abstractGraphical abstract for this article
       
  • Size reduction of raw material powder: The key factor to affect the
           properties of wasabi (Eutrema yunnanense) paste
    • Abstract: Publication date: Available online 11 May 2019Source: Advanced Powder TechnologyAuthor(s): Liqing Qiu, Min Zhang, Bhesh Bhandari, Zhongxiang Fang, Yaping Liu Wasabi paste is very popular worldwide because of its unique aroma and taste, which is produced from wasabi powder. In the present work, wasabi was ball-milled for 10, 20, 30, 40 and 50 min to obtain different particle size of powder, and the influence of ball milling time on the quality of wasabi paste was investigated. The product quality attributes such as color, water and isothiocyanate contents, chlorophyll content, rheology properties, flavor and sensory values were determined. Results shown that the best wasabi paste could be produced by ball-milling wasabi for 30 min yielding a particle size of 499.1 ± 36.1 nm, with the highest isothiocyanate, chlorophyll content and sensory scores as well as the best color properties. This work demonstrated that high quality wasabi paste could be produced by selecting proper ball milling time of the raw wasabi material to get proper particle size.Graphical abstractGraphical abstract for this article
       
  • Biosynthesis of tin oxide (SnO2) nanoparticles using jujube fruit for
           photocatalytic degradation of organic dyes
    • Abstract: Publication date: Available online 11 May 2019Source: Advanced Powder TechnologyAuthor(s): Moones Honarmand, Morteza Golmohammadi, Atena Naeimi In this study, tin oxide (SnO2) nanoparticles were synthesized via a green route using jujube fruit as a non-toxic, renewable reducing agent, and excellent stabilizer. The biosynthesized SnO2 nanoparticles were characterized by X-ray diffraction analysis (XRD), Fourier-Transform infrared (FT-IR), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). Moreover, the photocatalytic activity of the novel SnO2 nanoparticles was investigated for degradation of two organic dyes which were named methylene blue (MB) and eriochrome black-T (EBT) under direct sunlight. An excellent performance was observed and about 90% and 83% of degradation efficiencies were achieved for MB and EBT, respectively. The high stability of the photocatalyst also makes SnO2 nanoparticles easily to reuse at least four times without any remarkable loss in activity.Graphical abstractGraphical abstract for this article
       
  • Preparation and physicochemical characterization of soy isoflavone (SIF)
           nanoparticles by a liquid antisolvent precipitation method
    • Abstract: Publication date: Available online 10 May 2019Source: Advanced Powder TechnologyAuthor(s): Xiaonan Zhang, Hongwei Zhang, Xinghao Xia, Zhuping Yu, Mourtada Nabih, Ying Zhu, Shuang Zhang, Lianzhou Jiang Soy isoflavone (SIF) nanoparticles were prepared using dimethyl sulfoxide as a solvent and water as an antisolvent. Response surface methodology was used to analyse the influences of several process parameters on the mass median diameter (D50). The SIF concentration (20–40 mg/mL), volume ratio of antisolvent to solvent (5–7 mL/mL), stirring speed (800–1600 r/min), and reaction time (2–4 min) were optimized. The optimal conditions were determined to be a SIF concentration, volume ratio of antisolvent to solvent, stirring speed and reaction time of 29 mg/mL, 7 mL/mL, 1533 r/min and 3 min, respectively. Satisfactory D50 of SIF (101.24 ± 12.21 nm) were achieved. The processed and unprocessed SIFs were tested and characterized. By comparing the parameters, the chemical properties of the processed and unprocessed SIFs did not change, but the water dissolution rate of the prepared SIF nanoparticles was greatly enhanced.Graphical abstractGraphical abstract for this article
       
  • Evaluation of proanthocyanidin-crosslinked sericin/alginate blend for
           ketoprofen extended release
    • Abstract: Publication date: Available online 10 May 2019Source: Advanced Powder TechnologyAuthor(s): Emanuelle Dantas de Freitas, Beatriz Mayumi Lima, Paulo César Pires Rosa, Meuris Gurgel Carlos da Silva, Melissa Gurgel Adeodato Vieira Sericin and alginate blend has shown good results for obtaining sustained release dosage forms. In the case of ketoprofen, it was necessary to resort to the use of the proanthocyanidin (PA) as crosslinking agent in order to achieve this same goal. Thus, various formulations were developed by adding different initial amounts of PA to the sericin and alginate blend with incorporated ketoprofen. The best results for drug loading, entrapment efficiency and release prolongation were obtained for the particle with the lowest amount of PA (0.5%). Mathematical modeling has indicated that different mechanisms may be involved in drug release, especially a complex release mechanism, with polymer dissolution and polymer chain relaxation allowing drug release. Particles characterization confirmed the incorporation of ketoprofen into the sericin, alginate and proanthocyanidin blend. It was verified that there was no interaction between them and there were no major changes in the physicochemical properties of the drug.Graphical abstractGraphical abstract for this article
       
  • Experimental and numerical analysis on the hydrodynamic behaviors of
           permeable microbial granules
    • Abstract: Publication date: Available online 9 May 2019Source: Advanced Powder TechnologyAuthor(s): Xiuqin Dong, Sheng Wang, Zhongfeng Geng, Yonghui Li, Minhua Zhang The microbial granules are found to be porous and permeable, which leads to a different drag force coefficient from the rigid sphere granules. Discrete element method (DEM) was employed to establish geometric models of porous microbial granules for the first time in this study. And computational fluid dynamics (CFD) was applied to simulate the effects of porosity and Reynolds number on the fluid flow, shear stress, pressure and drag force based on the established geometric models. The results showed that both the Reynolds number and the porosity of microbial granules significantly affect the fluid velocity distribution inside the granules. The porosity shows less effect on maximum shear stress than Reynolds number. It s well known that drag force consists form drag and skin drag. The ratio of form drag to drag force increased, while the skin drag force ratio decreased with the increasing Reynolds number. The porosity will enhance the skin drag and weaken the form drag at the same Reynolds number. A drag force coefficient equation was established based on the simulated results in order for engineering application. The correctness of the equation was confirmed by comparing with experimental results. The results from this study may provide valuable information for operation and designing of a granule-based bioreactor in wastewater treatment.Graphical abstractComputational Fluid Dynamics (CFD) was used to analyze the drag force on the porous microbial granules. For the permeable microbial granules, at a low Reynolds number, porosity has little effect on the wake region. However, at a larger Reynolds number, with the increase of the porosity, the scale of the wake area is decreasing. This indicates that the formation mechanisms of drag force is significantly affected by porosity and Reynolds number.Graphical abstract for this article
       
  • Chitin derived biochar as an alternative adsorbent to treat colored
           effluents containing methyl violet dye
    • Abstract: Publication date: Available online 9 May 2019Source: Advanced Powder TechnologyAuthor(s): Maria A. Zazycki, Priscila A. Borba, Rafaela N.F. Silva, Enrique C. Peres, Daniele Perondi, Gabriela C. Collazzo, Guilherme L. Dotto Chitin was used to prepare an alternative, eco–friendly and low–cost adsorbent by a simple pyrolysis process. The adsorbent, named chitin derived biochar, was characterized and applied to treat colored effluents containing methyl violet dye (MV). Pyrolysis using N2 flow rate of 0.25 L min−1, heating rate of 10 °C min−1 until 800 °C was suitable to prepare a chitin derived biochar with good characteristics. Chitin derived biochar presented surface area of 275.0 m2 g−1. The MV adsorption on the chitin derived biochar was favored in alkaline conditions and ambient temperature. The adsorption process presented fast kinetics and, the maximum adsorption capacity was higher than 1000 mg g−1. Chitin derived biochar can be used for 7 consecutive adsorption/desorption cycles maintaining the same adsorption capacity. Also, the material was suitable to treat colored effluents, reaching color removal percentage of 95%. In brief, it was demonstrated that chitin derived biochar is a low–cost and efficient material to treat colored effluents.Graphical abstractGraphical abstract for this article
       
  • Bends pressure drop in hydraulic conveying
    • Abstract: Publication date: Available online 9 May 2019Source: Advanced Powder TechnologyAuthor(s): M. Friman Peretz, A. Levy Hydraulic transport is a process in which solid particles are carried via liquid. In order to effectively design the system, the pressure drops, caused by the flow, through the various pipe elements have to be known. In this manuscript, an analysis of the flow within a horizontal bend element and the parameters affecting the pressure drops during hydraulic conveying is investigated. The predictive ability of Toda et al. (1972) correlation for a wide range of parameters was investigated. It was found that the correlation deviates from the experimental databases that were collected from the literature. Hence, a new empirical correlation was developed based on the experimental data using a linear multiple regression method. The pressure drops databased was further increased by modeling and simulation for an area that was not covered experimentally in the literature. Thus, verification of the new pressure drops empirical correlation was made with a wide database. The comparison showed that the new correlation deviation was 0.0304, compared to 0.103 with the Toda et al. (1972) correlation. In contrast to Toda et al. (1972) correlation, the newly developed correlation considers more parameters, e.g. pipe diameter and particles’ diameter, that affect the flow and bend pressure drop.Graphical abstractGraphical abstract for this article
       
  • Controllable synthesis of BaCuSi2O6 fine particles via a one-pot
           hydrothermal reaction with enhanced violet colour hue
    • Abstract: Publication date: Available online 7 May 2019Source: Advanced Powder TechnologyAuthor(s): D.A. Corona-Martínez, J.C. Rendón-Angeles, L.A. Gonzalez, Z. Matamoros-Veloza, K. Yanagisawa, A. Tamayo, J.R. Alonso The present work provides a new approach to address the effect of precursor anions Cl− or NO3− for assisting the one-pot hydrothermal reaction to crystallise BaCuSi2O6 without the addition of pH solution controlling chemicals. The importance of the anionic species role was investigated by comparing two different Cu2+ ion precursors, Cu(NO3)2 and CuCl2; the temperature and reaction time for the hydrothermal treatments as well. The crystallisation of the tetragonal structured BaCuSi2O6 particles occurred at a temperature as low as 180 °C for a reaction interval of 48 h in the hydrothermal media using both Cu2+ precursors. The formation of BaCuSi2O6 particles free of by-products was carried via one-pot processing involving a single-step reaction. The purple Han particles were formed via the dissolution of the coprecipitated precursor gel containing a stoichiometric Ba:Cu:Si molar mixing ratio 1:1:2. Differences on the morphology of the particles were attained to the usage of the Cu2+ precursor. Fine plate-like particles averaging 90 nm size were assembled forming semispherical nest-like agglomerates with an average size of 1.5 µm when Cu(NO3)2 was used, these particles exhibit CIE-L*a*b* colour coordinates of 67.149, 18.164, and −31.562. In contrast, the particles obtained using CuCl2 had other morphology consisted of irregularly shaped aggregates (average size of 1 µm) of fine euhedral BaCuSi2O6; the CIE-L*a*b* colour coordinates for this powder were 68.806, 23.784, and −39.836. All the powders prepared at the optimum conditions exhibited (CIE-L*a*b*) values that correspond to the blue-purple colour spectra space, but the differences on the colour values are affected by the morphological and size variations of the BaCuSi2O6 particles, which were caused by the growth of euhedral BaCuSi2O6 particles averaging 5 µm in size achieved by the dissolution of intermediate 3D hierarchical BaCuSi2O6 particles over 48 h at 200 and 240 °C.Graphical abstractGraphical abstract for this article
       
  • Facile synthesis of spherical nanostructured LiCoPO4 particles and its
           electrochemical characterization for lithium batteries
    • Abstract: Publication date: Available online 7 May 2019Source: Advanced Powder TechnologyAuthor(s): Ye Li, Izumi Taniguchi Spherical nanostructured LiCoPO4 (SN-LiCoPO4) particles were facilely synthesized by citric acid assisted spray pyrolysis at 600 °C in air atmosphere. The X-ray diffraction pattern of the synthesized LiCoPO4 samples was indexed to olivine structure with a Pnma space group. Scanning electron microscopy analysis showed that the primary particle size of LiCoPO4 reduced due to citric acid additive into a precursor solution. This fact may indicate that the citric acid additive restricted the agglomeration and growth of primary particles in a droplet to solid particle conversion process of spray pyrolysis synthesis. The first discharge capacity of SN-LiCoPO4 electrode is 135 mAh g−1 at 0.05 C in a voltage range of 2.0–5.1 V, corresponding to approximately 81% of its theoretical capacity (167 mAh g−1). Moreover, the rate capability of SN-LiCoPO4 electrode was superior to that of bare LiCoPO4 electrode, delivering a discharge capacity of 73 mAh g−1 even at 0.5 C. Cyclic voltammetry and electrochemical impedance spectroscopy data demonstrated that the SN-LiCoPO4 electrode had lower polarization and faster redox reaction kinetics for the charge and discharge processes. These results were attributed to the reduced primary particle sizes that shortened the lithium ion diffusion pathway during the charge and discharge processes for lithium batteries.Graphical abstractGraphical abstract for this article
       
  • Plasmon enhanced luminescence in hierarchically structured Ag@
           
    • Abstract: Publication date: Available online 4 May 2019Source: Advanced Powder TechnologyAuthor(s): Gözde Alkan, Lidija Mancic, Sayaka Tamura, Koji Tomita, Zhenquan Tan, Feifei Sun, Rebeka Rudolf, Satoshi Ohara, Bernd Friedrich, Olivera Milosevic Ag@ (Y0.95 Eu0.05)2O3 nanocomposites were synthesized by single step Ultrasonic Spray Pyrolysis (USP). 800 °C synthesis temperature and 1.5 l/ min air flow were determined as optimal USP parameters. A detailed parametric study was conducted on samples with varying silver contents and heat treatment conditions. The effect of silver in both as prepared and heat treated samples were elucidated in terms of structural and functional properties. Ag incorporation decreased luminescence efficiency due to the lack of crystallization of matrix and non-homogenous distribution of Eu and Ag in as prepared samples. Heat treatment improved luminescence by improved crystal quality for all samples; however, with increasing Ag content effect of heat treatment was more pronounced owing to uniform distribution of Ag. 2.5 wt% Ag addition followed by 2 h heat treatment after USP synthesis is suggested as the most efficient nanocomposite for red light emitting down converting phosphor applications.Graphical abstractGraphical abstract for this article
       
  • Full title (Editorial Board Members)
    • Abstract: Publication date: June 2019Source: Advanced Powder Technology, Volume 30, Issue 6Author(s):
       
  • Inside Front Cover (Aims & Scope, Editors)
    • Abstract: Publication date: June 2019Source: Advanced Powder Technology, Volume 30, Issue 6Author(s):
       
  • Preparation, characterization and photocatalytic activity of Dawson type
           phosphotungstate/graphene oxide composites
    • Abstract: Publication date: Available online 30 April 2019Source: Advanced Powder TechnologyAuthor(s): Wang Ruixin, Dang Lifang, Liu Yefeng, Jiao Weizhou In this study, single lacunary Dawson type tungstophosphate (P2W17) was modified with γ-(2,3-epoxypropoxy)propyltrimethoxysilane (EPO) to prepare P2W17-EPO containing epoxy groups, and graphene oxide (GO) was modified with 3-aminopropyltrimethoxysilane to prepare GO-NH2 containing amino groups. Then, P2W17 was covalently bonded onto the surface of GO through the reaction of P2W17-EPO with GO-NH2 for the preparation of GO/P2W17 composite photocatalysts, and their compositions and structures were characterized by the Fourier transform infrared spectroscopy, thermogravimetric analysis, X-Ray diffraction spectroscopy, X-ray photoelectron spectroscopy, high resolution transmission electron microscopy, electrochemical impedance spectroscopy and BET analysis. The photocatalytic activity of GO/P2W17 for methylene blue (MB) was also investigated. The results show that the covalent bonding of P2W17 to GO results in an increase in the specific surface area, a reduction in the charge transfer impedance, and an increase in the transfer of photoinduced electrons. GO/P2W17 can effectively degrade MB in water under UV light and its photocatalytic activity is significantly higher than that of EPO-P2W17, which can be attributed to the synergetic effects of adsorption and photocatalytic degradation. GO speeds up the separation of photoexcited electron hole pairs of P2W17 during photocatalytic process. Besides, GO/P2W17 also has good reusability and its reuse for 6 times results in only a slight decrease in the degradation rate of MB. It is concluded that the covalent bonding of P2W17 onto GO can improve the photocatalytic activity of P2W17.Graphical abstractGraphical abstract for this article
       
  • Improve the thermal performance of the pillow plate heat exchanger by
           using nanofluid: Numerical simulation
    • Abstract: Publication date: Available online 30 April 2019Source: Advanced Powder TechnologyAuthor(s): Mojtaba Shirzad, Seyed Soheil Mousavi Ajarostaghi, Mojtaba Aghajani Delavar, Kurosh Sedighi In this paper, the effect of using different nanofluid as a coolant fluid on the thermal performance of Pillow plate heat exchanger (PPHE) is investigated. The objective of present study is using a new heat transfer enhancement method in PPHE by utilizing nanofluid instead of pure fluid as a heat transfer medium. Accordingly, heat transfer and pressure drop of three water-based nanofluids including Al2O3, CuO and TiO2 are studied by performing three-dimensional numerical simulations by the commercial CFD software. The fluid flow is turbulence, and the analysis is done at different Reynolds number (1000–8000). The results indicate that by increasing the nanoparticle volume concentration in the range of 2–5%, the heat transfer coefficient is improved significantly at low Reynolds number. In order to investigate the heat transfer and pressure drop of the proposed system simultaneously, the performance coefficient parameter is defined. Results showed that the heat exchanger performance is developed significantly at low Re number. On the other hand, the performance of different nanofluids is compared at two volume concentration. The Al2O3-water with ϕ=2% at all Reynolds numbers and the TiO2-water with ϕ=5% at higher Reynolds numbers have better performance among other nanofluids.Graphical abstractGraphical abstract for this article
       
  • DEM study of size segregation of wet particles under vertical vibration
    • Abstract: Publication date: Available online 30 April 2019Source: Advanced Powder TechnologyAuthor(s): La-La Zhao, Yun-Wang Li, Xiao-Dong Yang, Yang Jiao, Qin-Fu Hou DEM study of the size segregation of spherical and cubical wet particles was conducted with a linear cohesion contact model. The effects of cohesion force on segregation pattern and speed were examined. A hill-shaped segregation mode was observed and analysed in terms of total normal force between small-sized particles, tangential force along the Z-axis by container wall and torque acting on the particles. Then, the effect of vibration parameters on the segregation process was investigated. The results show that the cohesion force has a greater influence on the segregation pattern and speed of spherical particles than on cubical ones. The cubical particles can segregate more easily than spherical particles when the cohesion force is relatively high. With the increase of the cohesion force, both the normal force between small-sized particles, the tangential force along the Z-axis and the torque acting on the particles increase. The average forces and torque of the spherical particles are generally larger than that of the cubical particles under the same conditions. The segregation speed and the volume concentration of large particles are generally increasing with the increase of vibration frequency or amplitude. Moreover, the vibration parameter combination with a relatively low vibration frequency and a relatively high vibration amplitude is good for the segregation of wet particles for a given vibration intensity.Graphical abstractGraphical abstract for this article
       
  • Co-coating effect of GdPO4 and carbon on LiFePO4 cathode surface for
           lithium ion batteries
    • Abstract: Publication date: Available online 29 April 2019Source: Advanced Powder TechnologyAuthor(s): Yong Li, Juan Wang, HuiXing Huang, Jia Wang, Mi Zhang, MMeng Liang The electronic conductivity enhanced has been extensively studied and reported in lithium iron phosph-ate (LiFePO4). However, only few existing literatures are available for researchers to enhance simultaneously the ion and electronic conductivity of LiFePO4. Herein, we disclose that the LiFePO4 is co-coated with novel GdPO4 and Carbon via a hydrothermal-assisted solid-phase method, contributing to particle size and dispersibility. What surprising is that the ionic and electronic conductivity of the material is significantly enhanced, and the interfacial side reaction is effectively inhibited between the materials and the electrolytes. The diverse proportions of the mixed coating (LiFePO4/C&xGdPO4 (x = 0, 1 wt%, 2 wt%, 3 wt%, 4 wt%)) are synthesized compared with bare LiFePO4. The experimental results suggest that LiFePO4/C&0.03GdPO4 exhibits the most excellent electrochemical performance. There is discharge capacity of 158, 148.8, 141.6, 134.9, 121.8, 104.9, and 86.7mAh/g at 0.1, 0.2, 0.5, 1, 2, 5, and 10 C rates, respectively.Graphical abstractSchematic diagram for preparation procedure of LiFePO4/C&xGdPO4 products.Graphical abstract for this article
       
  • On the analysis of fracture mechanisms and mechanical behavior of
           AA5083-based tri-modal composites reinforced with 5 wt.%B4C and
           toughened by AA5083 and AA2024 coarse grain phases
    • Abstract: Publication date: Available online 27 April 2019Source: Advanced Powder TechnologyAuthor(s): Matin Saessi, Ali Alizadeh, Alireza Abdollahi In this article, the influence of AA2024 and AA5083 coarse grains on mechanical properties and failure mechanisms of AA5083-5%B4C tri-modal composite has been discussed. AA2024 and AA5083 powders (
       
  • Performance optimization and improvement of dust laden air by dynamic
           control method for jet pulsed filters
    • Abstract: Publication date: Available online 26 April 2019Source: Advanced Powder TechnologyAuthor(s): Nihat Çankaya, Muciz Özcan Almost all of the energy consumption of Jet Pulsed Filters is due to their reverse jet bag cleaning system. However, they have been working with simple bag cleaning algorithms. In order to optimize their energy consumption, these filters could be operated using an advanced automation with an innovative dynamic algorithms. In this study, initially, nine different types of novel cleaning algorithms were tested for Jet Pulsed Filters in an industrial plant by using an advanced automation system under real operating conditions. Then, an optimized cleaning algorithm was developed to operate all these filters efficiently, thanks to the data obtained from the experiments. By using the proposed algorithm instead of the classical one; energy consumption of the filter, the energy consumed per cubic meter of produced cleaning air and the waste oil generation were decreased by 50.7%, 73.9% and 86.5%, respectively. A 29.4 °C reduction in the temperature of the blower oil was also detected involving the extension of the oil life span by 7.4 times. Moreover, the average noise level in the factory was reduced from 83 dB to 79 dB. In this purpose, the number of bags cleaned per hour and the cleaning air production were increased by 183% and 89%, respectively.Graphical abstractGraphical abstract for this article
       
  • Mill, material, and process parameters – A mechanistic model for the
           set-up of wet-stirred media milling processes
    • Abstract: Publication date: Available online 26 April 2019Source: Advanced Powder TechnologyAuthor(s): S. Breitung-Faes, A. Kwade Stirred media milling is frequently used to generate nanoparticles for industrial applications such as paints, inks, and food or for the life sciences. Each product suspension has different requirements and therefore different material and formulation parameters. The first attempts to set up a new process are experimental in nature, especially the determination of a suitable composition. To adapt a process to the production scale, more experimental work is often needed to determine suitable operation parameters with regard to energy consumption, throughput, and investment cost. The energy consumption is influenced by operation parameters such as the size of the grinding media or the stirrer tip speed, whereas the investment costs are influenced by the mill geometry and size and the type of grinding media used. Therefore, it is challenging to transfer or scale up processes because lab-scale mills are smaller and may have different geometries than production-scale mills. Moreover, it is well known that the lab-scale operation parameters cannot be easily adapted to the production scale. In this study, the stress model developed by Kwade was improved by introducing parameters corresponding to the mill and the material in addition to the process parameters. Using this model, the optimum operating conditions for stirred media milling processes can be determined with a reduced amount of experimental work, even for geometrically unequal mills.Graphical abstractGraphical abstract for this article
       
  • Catalytic ozonation of industrial textile wastewater using modified
           C-doped MgO eggshell membrane powder
    • Abstract: Publication date: Available online 25 April 2019Source: Advanced Powder TechnologyAuthor(s): Ghorban Asgari, Javad Faradmal, Hassan Zolghadr Nasab, Hamied Ehsani This effort demonstrates preparation and characterization of carbon-doped magnesium oxide (C-MgO) doped on an eggshell membrane powder (C-MgO-EMP) as a catalyst. The catalytic activity of C-MgO-EMP was assessed in a catalytic ozonation process (COP) for treating a real textile wastewater. A 43 full factorial design (FFD) was conducted to plan an experimental series in the catalytic treatment of the textile wastewater via a C-MgO-EMP catalyst. In the catalytic treatment process with the as-prepared catalyst, the test conditions were optimized at an ozone flow rate = 0.4 L/min, a catalyst dose = 0.23 g/L, and reaction time = 10 min. The catalytic efficiency of the C-MgO-EMP catalyst in the degradation (decolorize based on ADMI color unit) and mineralization (TOC removal) of the real textile wastewater was calculated to be 93% and 78%, respectively. The prepared catalyst had better potential catalytic activity (synergetic effect = 52%) than the commercial activated carbon (CAC) and O3 in TOC removal. Based on the kinetic study, the ratio of Koverall-c-MgO-EMPTOCKoverall-CACTOC was indicated to be 1.584. Kinetic results demonstrated that the mineralization rate in COP with C-MgO-EMP catalyst is 9.05 times higher than the CAC/O3 process.Graphical abstractGraphical abstract for this article
       
  • Phase-transition induced gelation of ZnO suspensions containing
           thermosensitive poly(acrylic acid)-graft-poly(N-isopropylacrylamide)
    • Abstract: Publication date: Available online 25 April 2019Source: Advanced Powder TechnologyAuthor(s): Jian Ren, Yuehua Sun Thermosensitive ZnO suspensions containing poly(acrylic acid)-graft-poly(N-isopropylacrylamide) (PAA-g-PNIPAM) are used to prepare complex-shaped ceramic parts by controlling the phase transition of PNIPAM graft chains. The properties of PAA-g-PNIPAM aqueous solution and the rheological behavior of ZnO suspensions with PAA-g-PNIPAM were investigated. The results show that PAA-g-PNIPAM is a pH- and temperature-sensitive polymer, and its lower critical solution temperature is 32 °C. The isoelectric point of ZnO particles shifts from 9.1 to 4.8 after adding PAA-g-PNIPAM, and the adsorption capacity of PAA-g-PNIPAM on ZnO particles decreases with increasing pH value. The 45 vol.% ZnO suspension containing 3.0 mg/g PAA-g-PNIPAM exhibits a good fluidity at room temperature, and a rapid increase in apparent viscosity and shear elastic modulus above 32 °C due to the decay of steric hindrance and the increase of effective volume fraction caused by the phase transition of PNIPAM graft chains. The complex-shaped ceramic parts prepared using thermosensitive ZnO suspensions are in good condition with few pores.Graphical abstractGraphical abstract for this article
       
  • Composite Al∙Ti powders prepared by high-energy milling with
           different process controls agents
    • Abstract: Publication date: Available online 24 April 2019Source: Advanced Powder TechnologyAuthor(s): Mehnaz Mursalat, Mirko Schoenitz, Edward L. Dreizin Aluminum-rich Al-Ti composite powders with controllable particle size distributions were prepared by staged mechanical milling using polar and nonpolar organic process control agents. Staged milling allowed the separation of formation of composites in the first stage from control of particle size and ignition behavior in the second stage. Using the polar solvent acetonitrile in the second stage resulted in more finely dispersed particles with lower onset temperatures for intermetallic formation reactions, and lower ignition temperatures, compared with using the non-polar hexane. All composites showed lower ignition temperatures than reference aluminum. Combustion rates for all composites were greater than for reference aluminum, while net energy release remained comparable. The results suggest that staged milling with process control agents of different polarity is a viable method to control particle size distributions and ignition behavior in mechanically milled, metal-based energetic composite powders while maintaining the energy content. Particle size control is critical for adopting such materials in practical systems.Graphical abstractGraphical abstract for this article
       
  • Comparison of two fabrication processes for biomimetic
           collagen/hydroxyapatite hybrids
    • Abstract: Publication date: Available online 24 April 2019Source: Advanced Powder TechnologyAuthor(s): Yadong Chai, Mitsuhiro Okuda, Yuichi Otsuka, Kiyoshi Ohnuma, Motohiro Tagaya Two different fabrication processes of collagen/hydroxyapatite (Col/HAp) hybrid structures were compared to investigate the inorganic/organic systems of (i) HAp nanocrystals combined with Col molecules (Col-M/HAp) and (ii) Col fibrils hybridized with the HAp nanocrystals (Col-F/HAp). The Col-M/HAp and Col-F/HAp were synthetized through the chemical reactions of the Col molecular or fibril states with HAp, indicating that the HAp crystal growth was effectively enhanced by the Col. It was found that the hybrid structures (i.e., aggregated and/or intermolecular dityrosine cross-linked states) of the Col-F/HAp with the higher density would be close to those of the fish scale. In the Col-F/HAp, the Col molecules firstly formed the fibrils to interact with the HAp nanocrystals at the hole zone.Graphical abstractGraphical abstract for this article
       
  • Numerical investigation of turbulent Cu-water nanofluid in heat exchanger
           tube equipped with perforated conical rings
    • Abstract: Publication date: Available online 24 April 2019Source: Advanced Powder TechnologyAuthor(s): M.E. Nakhchi, J.A. Esfahani Numerical analysis of the nanofluid flow characteristics of perforated conical rings in a heat exchanger tube has been investigated under constant wall temperature condition. The pitch ratio of the perforated conical rings is 4 and the number of holes is varied from 0 (typical conical ring) to 10. The flow regime is fully turbulent with the Reynolds number is varied from 5000 to 14,000 and Cu-water nanofluid 0
       
  • Influence of co-catalyst amount/size for selective hydrogenation of
           1,3-dinitrobenzene over Au-mTiO2 nanocomposites under visible light
    • Abstract: Publication date: Available online 24 April 2019Source: Advanced Powder TechnologyAuthor(s): Manpreet Kaur Aulakh, Bonamali Pal This study demonstrates the co-catalytic effect for selective hydrogenation of a particular group in a multifunctional organic compound. Transmission electron microscopy (TEM) studies revealed that Au loaded nanoparticles were found to be of ∼3.89 nm and ∼8.86 nm with 1 wt% and 3 wt% metal loading respectively by homogeneous deposition precipitation (HDP) method over synthesized mesoporous titanium dioxide (m-TiO2) nanoparticles. The Au particles were deposited in the metallic state which was confirmed from X-ray photoelectron spectroscopy (XPS) with a binding energy of 84.0 eV and 87.7 eV credited to 4f5/2 and 4f7/2 spin states respectively. In this Au-mTiO2 heterojunction, metal particles found to be decisive for 100% selective hydrogenation of 1,3-dinitrobenzene under visible light. Predominantly, m-nitroaniline formed when 1,3-dinitrobenzene was treated with 1 wt% Au-mTiO2 whereas 100% photoreduction of both nitro groups occurred with 3 wt% Au-mTiO2. Hence, 1,3-dinitrobenzene exhibited particle size sensitive photocatalytic hydrogenation under mild conditions without using any reducing agent.Graphical abstractThis work reveals the co-catalytic amount/size effect of Au nanoparticles on the surface of mesoporous titanium dioxide (m-TiO2) for selective hydrogenation of 1,3-dinitrobenzene in the presence of visible light.Graphical abstract for this article
       
  • Nanocrystalline NiAl intermetallic alloy with high hardness produced by
           mechanical alloying and hot-pressing consolidation
    • Abstract: Publication date: Available online 23 April 2019Source: Advanced Powder TechnologyAuthor(s): Marek Krasnowski, Stanisław Gierlotka, Sylwia Ciołek, Tadeusz Kulik An Ni-50% Al elemental powder mixture was mechanically alloyed in a SPEX ball mill. The powders after various milling times were investigated by X-ray diffraction and differential scanning calorimetry. A nanocrystalline NiAl intermetallic phase with the mean crystallite size of 13 nm was formed after 8 h of milling. The produced powder was consolidated by high-pressure hot-pressing at 800 °C under the pressure of 7.7 GPa. The consolidated material was characterised by structural investigations. Hardness, density and open porosity as well as heat resistance measurements were also conducted. The mean crystallite size of the NiAl intermetallic phase in the bulk material was 24 nm, which shows that the nanocrystalline structure was maintained during the consolidation process. The hardness and heat resistance of the produced nanocrystalline NiAl were compared with those of a reference microcrystalline NiAl. The hardness of the nanocrystalline NiAl intermetallic is 971 HV1 (9.53 GPa) and it significantly exceeds the hardness of the reference microcrystalline NiAl. The relative density of the consolidated sample is 100%. The produced nanocrystalline NiAl intermetallic exhibits very good oxidation resistance at 900 °C in air. For this material, the mass gain per area after 100 h of exposure is 1.4 × 10−4 g and is smaller than that for the reference microcrystalline NiAl sample. The quality of consolidation with preserving NiAl nanocrystalline structure is satisfactory and the hardness as well as the oxidation resistance of the produced material are relatively high.Graphical abstractGraphical abstract for this article
       
  • Microwave synthesis of ultra-high temperature ceramic ZrC nanopowders
    • Abstract: Publication date: Available online 23 April 2019Source: Advanced Powder TechnologyAuthor(s): Juan P. Yasnó, Rodolfo F.K. Gunnewiek, Ruth H.G.A. Kiminami Ultra-high temperature ceramic zirconium carbide (ZrC) nanopowders were synthesized for the first time via a microwave-assisted carbothermal reduction reaction using zirconia (ZrO2) and carbon black (C) as the starting materials. The effect of the reaction time on the formation of ZrC nanoparticles was examined. The as-synthesized samples were characterized using X-ray diffraction (XRD), helium pycnometry, Brunauer-Emmett-Teller (BET) N2 adsorption, scanning electron microscopy (SEM) and high-resolution transmission electron microscopy (HRTEM). The lattice constant and interplanar distance (d111) were calculated, and the crystallite size was obtained using the Scherrer formula. Results from the experiment show highly crystalline ZrC, with crystallites less than 50 nm and nearly-spherical morphology, using 3 kW of power and only 50 min of reaction time, with a maximum reaction temperature of 1400 °C, lower than those involved using the conventional heating carbothermal reduction. The reaction time was ∼2 h shorter than that required by using a combined sol-gel and microwave-assisted carbothermal reduction method, used to prepare submicron ZrC powders (200–300 nm). The high heating rate achieved on the synthesis was favored by the excellent microwave absorption of carbon black, and the uniform heating at molecular level induced by the microwaves on the samples.Graphical abstractGraphical abstract for this article
       
  • BiVO4/BiOX (X = F, Cl, Br, I) heterojunctions for degrading organic
           dye under visible light
    • Abstract: Publication date: Available online 23 April 2019Source: Advanced Powder TechnologyAuthor(s): Hadi Razavi-Khosroshahi, Sara Mohammadzadeh, Mirabbos Hojamberdiev, Sho Kitano, Miho Yamauchi, Masayoshi Fuji The accumulation of organic pollutants in surface water, groundwater, and even drinking water has raised as a serious issue in recent decades. Semiconductor-based photocatalysis has emerged as a green and sustainable approach to find remediate solutions for environmental and energy issues. However, the fast recombination rate of photogenerated charge carriers reduces the photocatalytic efficiency of photocatalysts. In this study, a hydrothermal synthesis method is proposed for preparing four types of p–n heterojunctions, BiVO4/BiOX (X = F, Cl, Br, I). BiVO4 is an n-type semiconductor and BiOX is a p-type semiconductor. Photocatalytic activity tests showed that the BiVO4/BiOF has the best photocatalytic performance under visible light, and photoluminescence spectra confirmed the lowest recombination rate of photogenerated charge carriers for BiVO4/BiOF as compared with others.Graphical abstractGraphical abstract for this article
       
  • Flow patterns classification of dense-phase pneumatic conveying of
           pulverized coal in the industrial vertical pipeline
    • Abstract: Publication date: Available online 22 April 2019Source: Advanced Powder TechnologyAuthor(s): Yong Jin, Haifeng Lu, Xiaolei Guo, Xin Gong Dense-phase pneumatic conveying of pulverized coal experiments with superficial gas velocity ranged from 0.59 m s−1 to 2.43 m s−1 were carried out on the self-established 50 mm I.D. industrial pipe facility. The fluctuations of pressure, solid velocity, solid concentration and the average cross-section concentration were analyzed in terms of relative standard deviation (RSD), powder spectrum density analysis (PSD) and wavelet analysis. Further, a novel classification model of flow patterns for dense-phase pneumatic conveying of pulverized coal was proposed. The model was based on the relationships among superficial gas velocity, particle velocity and solid concentration. K-means method, std method, k-medoids and CART method were compared firstly and then the k-means method and CART method were introduced to classify the flow patterns. The bagged trees method and 5-fold cross-validation were used to train the classification model, whose accuracy was 95.2% and 91.9%. It meant that the new classification model was able to classify the flow patterns in the pneumatic conveying of pulverized coal. In the end, the change of flow patterns and transmission of flow patterns were explained by the wavelet analysis method from the aspects of different signal scales and power spectrum analysis. The new classification model will be of great help for the industry to have a better understanding on the classification and control of flow patterns.Graphical abstractGraphical abstract for this article
       
  • ZnFe2O4 and ZnO-Zn1−xMxFe2O4+δ (M = Sm3+, Eu3+ and Ho3+):
           Synthesis, physical properties and high performance visible light induced
           photocatalytic degradation of malachite green
    • Abstract: Publication date: Available online 20 April 2019Source: Advanced Powder TechnologyAuthor(s): Alireza Hakimyfard, Samira Mohammadi The present work reports the synthesis of ZnFe2O4 and ZnO-Zn1-xMxFe2O4+δ (Ln = Sm, Eu and Ho) nanomaterials by conventional solid state reactions between Ln2O3, Zn(NO3)2, Fe(NO3)3·9H2O and/or FeCl3·6H2O raw materials at 800 °C for 10 h and 15 h. Stoichiometric and nonstoichiometric reactions were explored for the synthesis of ZnFe2O4. The two Fe sources (Fe(NO3)3 and FeCl3) were used to study the proper raw material type for the synthesis of the ZnFe2O4. The synthesized nanomaterials were characterized by powder X-ray diffraction (PXRD) technique. Rietveld analysis showed that the obtained materials were crystallized well in cubic crystal system with the space group Fd3m and lattice parameters a = b = c = 8.4 Å. The rietveld data showed that the purity of ZnFe2O4 was increased from 14% to 88% when the Fe source was changed from FeCl3 to Fe(NO3)3 meanwhile the reaction time was changed from 10 to 15 h. However, the purity was increased to 96% when the stoichiometry of Zn:Fe was changed from 1:2 to 0.8:2 at 800 °C for 15 h. The PXRD data revealed that dopant ion type had a considerable influence on the crystal phase purity of the obtained materials. It was found that Yb2O3 decreased more the purity of the obtained target compared to the other dopant ions. Ultraviolet-visible spectra showed that the synthesized nanomaterials had strong light absorption in the visible light region. Photocatalytic performance of the as-synthesized ZnFe2O4 was investigated for the degradation of pollutant Malachite Green (MG) in aqueous solution under direct visible light irradiation. The degradation yield at the optimized condition (0.09 mL H2O2, 30 mg catalyst and 60 min) was 98%.Graphical abstractGraphical abstract for this article
       
  • Controlled microstructure in two dimensional Ni-Co LDH
           nanosheets-crosslinked network for high performance supercapacitors
    • Abstract: Publication date: Available online 10 April 2019Source: Advanced Powder TechnologyAuthor(s): Hao Liu, Jing Li, Meiri Wang, Yuanyuan Liu, Jie Liu, Hongtao Cui Based on the electrochemical mechanism of Faraday supercapacitors (FSs), we design a microstructure configuration of electrode materials (EMs) in this work, aiming to promote the electrochemical performance of FSs. This configuration of EMs has two dimensional sheets-crosslinked network with narrow mesopore size distribution. It is reasonable to believe that the configuration is in favor of the electrochemical performance of EMs to the greatest extent. We try to build this structure configure using Ni-Co layered double hydroxide (LDH) nanosheets as building blocks by a facile sol-gel approach. Due to the Co2+ ions, we realize this structure configuration consisting of Ni-Co LDH nanosheets. Benefiting from the advantages of this configuration, the Ni-Co LDH presents high electrochemical performance. It has high specific capacity of 1170 C g−1 at low current density of 2.0 A g−1, and 500 C g−1 at high current density of 39.6 A g−1. The asymmetric supercapacitors of Ni-Co LDH exhibit high energy density of 74.37 Wh kg−1 at low power density of 492 Wh kg−1 and keep relatively high energy density of 15.99 Wh kg−1 at high power density of 6395 Wh kg−1. These results suggest that the designed structure configuration of EMs is rational for application in FSs.Graphical abstractA microstructure configuration of electrode materials was designed in this work, aiming to promote the electrochemical performance of Faraday supercapacitors. This configuration of EMs has two dimensional sheets-crosslinked network with narrow mesopore size distribution. It is reasonable to believe that the configuration is in favor of the electrochemical performance of EMs to the greatest extent. This structure configure using Ni-Co layered double hydroxide (LDH) nanosheets as building blocks by a facile sol-gel approach. Benefiting from the advantages of this configuration, the Ni-Co LDH presents high electrochemical performance.Graphical abstract for this article
       
  • Investigating the flow structures in semi-cylindrical bubbling fluidized
           bed using pressure fluctuation signals
    • Abstract: Publication date: Available online 10 April 2019Source: Advanced Powder TechnologyAuthor(s): Seyedeh Mahsa Okhovat-Alavian, Jamshid Behin, Navid Mostoufi Hydrodynamic characteristics of a gas-solid semi-cylindrical fluidized bed was experimentally investigated and compared with that of a cylindrical bed by analysis of pressure fluctuations. Pressure fluctuations were analyzed in time and frequency domains using standard deviation, power spectral density function and discrete wavelet transform methods. Experiments were carried out in two semi-cylindrical and cylindrical fluidized beds of 14 cm in diameter each, operating in the bubbling fluidization regime at ambient pressure and temperature. Both beds were filled with glass beads of various sizes (120, 290 and 450 µm). The superficial gas velocity was varied in the range of 0.2–0.8 m/s. Results showed that although the minimum fluidization velocity is influenced by the particle size, it is not affected by the geometry of the bed. It was shown that the hydrodynamics of both beds are very similar and the difference is negligible. Number of large bubbles is slightly larger in the semi-cylindrical bed as compared with the cylindrical bed. Also, increase in the particle size and superficial gas velocity result in a greater difference between the number of large bubbles in both beds and the number of large bubbles in the semi-cylindrical bed increases slightly faster than in the cylindrical bed.Graphical abstractGraphical abstract for this article
       
  • A review on pulsed flow in gas-solid fluidized beds and spouted beds:
           Recent work and future outlook
    • Abstract: Publication date: Available online 10 April 2019Source: Advanced Powder TechnologyAuthor(s): Maysam Saidi, Hassan Basirat Tabrizi, John R. Grace This paper reviews the application of pulsed flow in fluidized and spouted beds, widely used in various industries. A number of pulsing studies have been performed to improve the performance of these beds, enhance mixing and promote homogeneity. One effective way to increase the efficiency is to pulse the incoming flow, removing inactive or dead zones, thereby preventing agglomeration and settling. Although numerous studies have been carried out on conventional beds, little has been written on pulsed beds, in spite of their proven advantages. The role of pulsations in hydrodynamics, mixing, segregation, heat transfer, drying, and agglomeration are among the topics addressed. Future needs are identified and projected.Graphical abstractGraphical abstract for this article
       
  • A particle-resolved CFD model coupling reaction-diffusion inside fixed-bed
           reactor
    • Abstract: Publication date: Available online 6 April 2019Source: Advanced Powder TechnologyAuthor(s): Zhang Minhua, Dong He, Geng Zhongfeng Fixed bed reactor is widely used in the petrochemical industry. The most rigorous description of it is particle-resolved simulation. In this study, a particle-resolved CFD model coupling reaction-diffusion was developed. The gas and porous particle phase were solved separately and the data of heat and mass is exchanged across the phase interface. Detailed flow and reaction process for synthesis of vinyl acetate were investigated by this model. The results showed that the local flow was not uniform under different flow patterns, which leads to the non-uniform distributions of temperature and concentration. In addition, the intra-particle pore diffusion influenced the reactor performance. The increase of particle pore size can obviously promote average reaction rate and decrease product concentration inside particles. The proposed modeling provided deep insight for local flow and reaction-diffusion process and can be extended to entire fixed bed reactor.Graphical abstractGraphical abstract for this article
       
  • Pure YbB6 nanocrystals: First time synthesis via
           mechanochemical method
    • Abstract: Publication date: Available online 5 April 2019Source: Advanced Powder TechnologyAuthor(s): Tuncay Simsek The present report provides a new insight into the high purity synthesis of rare-earth ytterbium hexaboride, YbB6 nanocrystals, without using a solid state reaction or metathesis reaction methods. Single phase YbB6 nanocrystals were synthesized for the first time by direct and dry milling of Yb2O3, B2O3 and Mg starting powders. The effects of milling period on the formation and crystallite size of milled nanoparticles have been investigated. Single phase Rietveld refinement confirmed the cubic structure in Pm-3m space group with the lattice parameters a = b = c = 3.1444(2) Å, and 68 nm particle size of YbB6 phase. The YbB6 nanocrystals revealed a weak ferromagnetism and plus paramagnetic behavior. The ferromagnetic and paramagnetic behavior of the YbB6 are correlated to the large surface-to-volume ratio of ball-milled nanocrystals, and the presence of boron-rich and boron-deficient phases.Graphical abstractGraphical abstract for this article
       
  • Unburned carbon measurement in fly ash using laser-induced breakdown
           spectroscopy with short nanosecond pulse width laser
    • Abstract: Publication date: Available online 4 April 2019Source: Advanced Powder TechnologyAuthor(s): Renwei Liu, Yoshihiro Deguchi, Weigang Nan, Ruomu Hu, Zhenzhen Wang, Yuki Fujita, Seiya Tanaka, Kazuki Tainaka, Kenji Tanno, Hiroaki Watanabe, Jiping Liu, Junjie Yan The unburned carbon in fly ash is one of the important factors for the boiler combustion condition. Controlling the unburned carbon in fly ash is beneficial for fly ash recycle and to improve the combustion efficiency of the coal. Laser-induced breakdown spectroscopy (LIBS) technology has been applied to measure the fly ash contents due to its merits of non-contact, fast response, high sensitivity, and real-time measurement. In this study, experimental measurements have been adopted for fly ash flows with the surrounding gases of N2 and CO2, while the CO2 concentration varified to evaluate the CO2 effect on the unburned carbon signal from fly ash powder. Two kinds of pulse width lasers, 6 ns and 1 ns, were separately adopted to compare the influence of laser pulse width. Results showed that compared with that using 6 ns pulse width laser, plasma temperature was lower and had less dependence on delay time when using 1 ns pulse width laser, and spectra had more stable background. By using 1 ns pulse width laser, the emission signal from surrounding CO2 also decreased because of the less surrounding gas breakdown. The solid powder breakdown signals also became more stable when using 1 ns pulse width laser. It is demonstrated that 1 ns pulse width laser has the merits for fly ash flow measurement using LIBS.Graphical abstractCompared with 6 ns pulse width laser, interference of C signal from CO2 on unburned carbon of fly ash reduced when using 1ns pulse width laser, with more stable plasma states.Graphical abstract for this article
       
  • Fabrication of novel ZnO/BiOBr/C-Dots nanocomposites with considerable
           photocatalytic performances in removal of organic pollutants under visible
           light
    • Abstract: Publication date: Available online 28 March 2019Source: Advanced Powder TechnologyAuthor(s): Somayeh Zarezadeh, Aziz Habibi-Yangjeh, Mitra Mousavi In this study, ternary ZnO/BiOBr/C-Dots photocatalysts were successfully prepared by a simple strategy. Then, their characteristics such as structure, morphology, chemical, optical, textural, and photocatalytic performances were fully investigated. This study demonstrated that the ZnO/BiOBr/C-Dots nanocomposites showed remarkably increased photocatalytic performances compared with the ZnO and ZnO/BiOBr samples. In decolorization of RhB upon visible light, the highest activity was obtained when the volume of C-Dots was 0.25 mL, which was about 39.7 and 2.7 times premier than the ZnO and ZnO/BiOBr photocatalysts, respectively. In the ternary nanocomposites, the increased performance was mainly ascribed to the formed heterojunction between the counterparts, up conversion characteristics of C-Dots, and visible-light harvesting ability of BiOBr. The reactive species trapping experiments proved that O2− was the major species involved in the photocatalysis reaction. At last, the ternary nanocomposite displayed remarkable stability for recycling runs.Graphical abstractGraphical abstract for this article
       
  • Oxygen-rich TiO2 decorated with C-Dots: Highly efficient
           visible-light-responsive photocatalysts in degradations of different
           contaminants
    • Abstract: Publication date: Available online 23 March 2019Source: Advanced Powder TechnologyAuthor(s): Solmaz Feizpoor, Aziz Habibi-Yangjeh, Iraj Ahadzadeh, Kunio Yubuta Providing novel photocatalysts with high photocatalytic efficiency is of great significance. In the present work, hydrogen peroxide and carbon dots (C-Dots) were utilized to enhance the photocatalytic performance of TiO2 under visible light. The fabricated TiO2-peroxo/C-Dots photocatalysts were analyzed by XRD, HRTEM, SEM, EDX, BET, FT-IR, XPS, PL, UV–Vis DRS, EIS, and photocurrent density. Photocatalytic abilities of the nanocomposites were evaluated by photocatalytic removal of RhB, MO, MB, fuchsine, and Cr (VI) upon visible-light illumination. The results demonstrated that the binary nanocomposites exhibited remarkably enhanced photocatalytic activity compared with the TiO2 and TiO2-peroxo photocatalysts. The best photocatalytic performance was obtained using 0.75 mL of C-Dots, which was approximately 79.2, 17.1, 71.4, and 40.5 times higher than the pure TiO2 for degradations of RhB, MO, MB, and fuchsine, respectively. Furthermore, the TiO2-peroxo/C-Dots nanocomposites exhibited high stability in consecutive photocatalytic processes. Based on the results, the TiO2-peroxo/C-Dots photocatalyst is expected to become a promising photocatalyst for practical applications in water purification.Graphical abstractGraphical abstract for this article
       
  • Zn-assisted synthesis of high-performance adsorbent for methylene blue
    • Abstract: Publication date: Available online 22 March 2019Source: Advanced Powder TechnologyAuthor(s): Yingying Wang, Chaofan Zhang, Lixia Yang, Liangjiu Bai, Huawei Yang, Wenxiang Wang, Donglei Wei, Hou Chen, Yuzhong Niu, Feng Wang, Yanbin Xu The rapid removal of organic dyes from water under low temperature environment offers significant advantages when water purification is required in cold regions. In this work, porous lanthanum hexaboride (LaB6) nanoparticles were fabricated via a facile low-temperature molten metal (LTMM) method in Zn media under argon atmosphere. As is evidenced by the characterization results, porous LaB6 can be prepared at 400 °C. Elevated reaction temperature led to the growth of nanoparticles, serious aggregation and the residue of Zn element in the final product. Notably, LaB6 nanoparticles prepared at 600 °C by such a LTMM method presented ultrafast adsorption, with a maximum MB sorption capacity of 606.2 mg·g−1, which was competitive with most of reported sorbents. Owing to the photothermal conversion property, LaB6 powder not only accelerated the melting of iced MB solution, but also achieved the efficient adsorption of MB in cold weather. LaB6 nanoparticles could be used as an attractive sorbent for dye removal from contaminated water, because of its facile synthesis process, excellent sorption performance and photothermal conversion property.Graphical abstractGraphical abstract for this article
       
  • Bed pressure drop of a bubbling fluidized-bed with overflow solid
           discharge
    • Abstract: Publication date: Available online 21 March 2019Source: Advanced Powder TechnologyAuthor(s): Yoo Sube Won, Pil Sang Youn, Daewook Kim, Ji Bong Joo, Jeong-Hoo Choi, Ho-Jung Ryu The pressure drop of a bubbling fluidized-bed that employed an in-bed inlet and an overflow outlet for continuous flow of solid particles was investigated with variation in the particle size and density, the solid flow rate and the gas velocity. The bed pressure drop decreased with increasing the gas velocity, but increased with the solid flow rate. The characteristics in lifting the solid particles vertically to the level of the overflow outlet by bubbles appeared different from the ones of particle entrainment and bed expansion. Regardless of size and density of particles, bed height in minimum fluidizing condition (pressure head by solid bed weight, Hmf,f) decreased with increasing the volume flow rate of bubble but increased with the mass flow rate of solid particles. The nominal vertical height from Hmf,f to the level of the overflow outlet that the particles should overcome in the course of discharging out of the fluidized-bed with the aid of bubbles increased as either the volume flow rate of bubble increased or the mass flow rate of solid particles decreased. The power consumed while bubbles lifted particles to be discharged appeared to be same at the fixed volume flow rate of bubble. A correlation was proposed successful even for predicting the bed pressure drop of the recycle chamber of the loop seal and the external solid circulation rate in the circulating fluidized-bed system.Graphical abstractEffect of mass flux of solid on pressure drop across the bubbling fluidized-bed represented as the ratio of pressure head by bed weight in minimum fluidizing state to the level of the exit discharging solid (Hmf,f/L).Graphical abstract for this article
       
  • Non-firing ceramics: Effect of adsorbed water on surface activation of
           silica powder via ball milling treatment
    • Abstract: Publication date: Available online 21 March 2019Source: Advanced Powder TechnologyAuthor(s): Yuki Nakashima, Hadi Razavi-Khosroshahi, Chika Takai, Masayoshi Fuji “Non-firing” ceramics have recently attracted much attention because many functional ceramics can be achieved by this method without the sintering process. The underlying idea of this method is to activate the surface of the particles by ball milling. In this study, the effect of adsorbed water on the surface of raw silica powder was investigated. Amorphous silica powder was mechanically treated by a rotating ball mill system and the surface activity of the raw and treated silica powders was measured based on the water adsorbed volume on the powder surface. The results showed that the surface activity of the silica powder increased with the increasing adsorbed water volume on the surface of the silica powder. In addition, better mechanical properties evaluated by the Vickers hardness test were achieved for the silica with more water adsorbed on its surface. The effect of milling energy and ball to powder ratio on activation of the silica was also investigated.Graphical abstractGraphical abstract for this article
       
  • Development of ADEM–CFD model for analyzing dynamic and breakage
           behaviors of aggregates in wet ball milling
    • Abstract: Publication date: Available online 20 March 2019Source: Advanced Powder TechnologyAuthor(s): K. Kushimoto, S. Ishihara, J. Kano A new simulation method was developed for analyzing the grinding mechanisms of aggregates in wet ball milling. The calculation of the following five behaviors is needed in this case: dynamics and breakage behaviors of aggregates, collisions of aggregates, a motion of fluid including aggregates, ball-fluid interaction forces and aggregate-fluid interaction forces. The dynamic and breakage behaviors of aggregates were calculated by advanced discrete element method (ADEM). The collisions of aggregates were represented by DEM. The motion of fluid including aggregates was solved by spatially-averaged equations of the fluid with finite difference method (FDM). The ball-fluid interaction forces were calculated by immersed boundary method (IBM). The model for the aggregate-fluid interaction forces has not been established, so that a new simulation model for estimating them was developed and named ADEM-computational fluid dynamics (ADEM-CFD) model. The ADEM-CFD model was verified by comparing the fluid drag coefficients obtained by White’s equation. The new simulation method considering the five behaviors was validated by comparing with an experiment about dynamic and breakage behaviors of aggregates around a falling ball in liquid. It is found that the new simulation method proposed could analyze the dynamic and breakage behaviors of aggregates in wet ball milling.Graphical abstractGraphical abstract for this article
       
  • Performance evaluation of a new micro gas cyclone using simulation and
           experimental studies to capture indoor fine particles
    • Abstract: Publication date: Available online 19 March 2019Source: Advanced Powder TechnologyAuthor(s): Mofarrah Masoumeh, Li Shuran, Zheng Qinzhen, Deng Guanle, Liu Zhen, Yan Keping The aim of this study was evaluating a micro gas cyclone performance with a body diameter of 10 mm to collect indoor fine particles. The design of a cyclone requires minimizing the pressure drop and maximizing the separation efficiency. Overall and grade efficiencies, pressure drops, and cut sizes have been investigated through a theoretical model, simulation, and experimental studies. The experimental part was conducted using an Electrical Low-Pressure Impactor (ELPI) device to measure particle concentration for flow rates of 10–13.3 (l/min). In order to study the pressure drop and velocity behavior for different flow rates, COMSOL software was utilized. The obtained results from experimental work have met the theoretical and simulation outcomes adequately. It has been confirmed by all the obtained results that by increasing the flow rate and subsequently inlet velocity, the particle collection efficiency and pressure drop increase while the cut size decreases.Graphical abstractGraphical abstract for this article
       
  • SiO2+compounds+and+their+testing+as+heterogeneous+catalysts+for+transesterification+of+sunflower+oil&rft.title=Advanced+Powder+Technology&rft.issn=0921-8831&rft.date=&rft.volume=">Synthesis of CaOSiO2 compounds and their testing as heterogeneous
           catalysts for transesterification of sunflower oil
    • Abstract: Publication date: Available online 15 March 2019Source: Advanced Powder TechnologyAuthor(s): Miodrag Zdujić, Ivana Lukić, Željka Kesić, Ivona Janković-Častvan, Smilja Marković, Čedomir Jovalekić, Dejan Skala The powder mixtures of calcium oxide (CaO) and silica gel (SiO2) in molar ratios of 1:1, 1.5:1, 2:1 and 3:1 were mechanochemically treated with the addition of water, and were subsequently calcined with a goal of synthesizing CaSiO3, Ca3Si2O7, Ca2SiO4 compounds and CaO/Ca2SiO4 two-phase mixture. The prepared materials were characterized by XRD, FTIR, SEM/EDS, particle size laser diffraction (PSLD), UV–vis diffuse reflectance spectroscopy (DRS), N2 adsorption/desorption isotherms, Hammett indicator for basic strength and volumetric analysis for free CaO content. The catalytic activity of calcium silicates with different Ca/Si ratios was tested in the transesterification of triacylglycerols (sunflower oil) with methanol. Samples obtained with initial composition 2CaO·SiO2 and 3CaO·SiO2 calcined at 700 °C, and 3CaO·SiO2 calcined at 900 °C had high catalytic activity, resulting with triacylglycerols conversion and fatty acids methyl ester formation (FAME or biodiesel) above 96%. The activity of these samples can be attributed to the existence of free CaO defined by CaO/Ca2SiO4 complex mixture. The effect of different amount of catalyst used for transesterification (0.2–2 wt%) was analyzed using the most active catalyst i.e. 3CaO·SiO2 calcined at 700 °C as well as possibility of its reuse for biodiesel synthesis. It was also found that CaSiO3, Ca3Si2O7 and Ca2SiO4, phases did not possess catalytic activity.Graphical abstractGraphical abstract for this article
       
  • Synthesis and formation mechanism of monodisperse Mn-Co-Ni-O spinel
           nanocrystallines
    • Abstract: Publication date: Available online 13 February 2019Source: Advanced Powder TechnologyAuthor(s): Ting-ting Wei, Long Chen, Hai-hai Fu, Yu-lin Shi, Juan Hou, Feng Yu, Jiahui Ye, Haoquan Li, Changchun Fan, Dehong Chen, Bin Dai Uniform and single-crystalline Mn-Co-Ni-O nanocrystallines (MCN NCs) are successfully synthesized by the reverse microemulsion (RM) process. The microstructure, morphology and particle size of MCN NCs are characterized by Fourier Transform Infrared (FT-IR), X-ray powders diffraction (XRD), scanning electron microscope (SEM) and (High Resolution) Transmission Electron Microscope (HRTEM), respectively. These results show that the mole ratio of water to surfactant and initial reagents concentration play essential roles in the formation of cubic and tetragonal spinel MCN NCs with different morphologies of nano-sphere, nano-octahedra, and nano-hexagonal prism. Finally, the changing rules of microstructure and morphology are clarified, which help us understand the formation mechanism of spinel oxides.Graphical abstractSpinel oxide nanocrystallines (NCs) exhibit unique electrical and catalytic properties in numerous fields that are dependent on their microstructure and morphology. In this paper, the formation of Mn-Ni-Co-O NCs in the reverse microemulsion at different mole ratio of the water to surfactant and initial reagents concentration has been studied. It is novel of our experimental conditions that can control and tune the cubic and tetragonal spinel crystals with different morphologies of nano-sphere, nano-octahedra, and nano-hexagonal prism, which suggests their prospective applications for bifunctional electrocatalysts.Graphical abstract for this article
       
 
 
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