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Publisher: Elsevier   (Total: 3089 journals)

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Showing 1 - 200 of 3089 Journals sorted alphabetically
A Practical Logic of Cognitive Systems     Full-text available via subscription   (Followers: 7)
AASRI Procedia     Open Access   (Followers: 15)
Academic Pediatrics     Hybrid Journal   (Followers: 25, SJR: 1.402, h-index: 51)
Academic Radiology     Hybrid Journal   (Followers: 22, SJR: 1.008, h-index: 75)
Accident Analysis & Prevention     Partially Free   (Followers: 86, SJR: 1.109, h-index: 94)
Accounting Forum     Hybrid Journal   (Followers: 25, SJR: 0.612, h-index: 27)
Accounting, Organizations and Society     Hybrid Journal   (Followers: 30, SJR: 2.515, h-index: 90)
Achievements in the Life Sciences     Open Access   (Followers: 4)
Acta Anaesthesiologica Taiwanica     Open Access   (Followers: 5, SJR: 0.338, h-index: 19)
Acta Astronautica     Hybrid Journal   (Followers: 363, SJR: 0.726, h-index: 43)
Acta Automatica Sinica     Full-text available via subscription   (Followers: 3)
Acta Biomaterialia     Hybrid Journal   (Followers: 26, SJR: 2.02, h-index: 104)
Acta Colombiana de Cuidado Intensivo     Full-text available via subscription   (Followers: 1)
Acta de Investigación Psicológica     Open Access   (Followers: 2)
Acta Ecologica Sinica     Open Access   (Followers: 8, SJR: 0.172, h-index: 29)
Acta Haematologica Polonica     Free   (Followers: 1, SJR: 0.123, h-index: 8)
Acta Histochemica     Hybrid Journal   (Followers: 3, SJR: 0.604, h-index: 38)
Acta Materialia     Hybrid Journal   (Followers: 228, SJR: 3.683, h-index: 202)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5, SJR: 0.615, h-index: 21)
Acta Mechanica Solida Sinica     Full-text available via subscription   (Followers: 9, SJR: 0.442, h-index: 21)
Acta Oecologica     Hybrid Journal   (Followers: 10, SJR: 0.915, h-index: 53)
Acta Otorrinolaringologica (English Edition)     Full-text available via subscription   (Followers: 1)
Acta Otorrinolaringológica Española     Full-text available via subscription   (Followers: 3, SJR: 0.311, h-index: 16)
Acta Pharmaceutica Sinica B     Open Access   (Followers: 1)
Acta Poética     Open Access   (Followers: 4)
Acta Psychologica     Hybrid Journal   (Followers: 24, SJR: 1.365, h-index: 73)
Acta Sociológica     Open Access  
Acta Tropica     Hybrid Journal   (Followers: 6, SJR: 1.059, h-index: 77)
Acta Urológica Portuguesa     Open Access  
Actas Dermo-Sifiliograficas     Full-text available via subscription   (Followers: 4)
Actas Dermo-Sifiliográficas (English Edition)     Full-text available via subscription   (Followers: 3)
Actas Urológicas Españolas     Full-text available via subscription   (Followers: 4, SJR: 0.383, h-index: 19)
Actas Urológicas Españolas (English Edition)     Full-text available via subscription   (Followers: 2)
Actualites Pharmaceutiques     Full-text available via subscription   (Followers: 5, SJR: 0.141, h-index: 3)
Actualites Pharmaceutiques Hospitalieres     Full-text available via subscription   (Followers: 4, SJR: 0.112, h-index: 2)
Acupuncture and Related Therapies     Hybrid Journal   (Followers: 4)
Acute Pain     Full-text available via subscription   (Followers: 13)
Ad Hoc Networks     Hybrid Journal   (Followers: 11, SJR: 0.967, h-index: 57)
Addictive Behaviors     Hybrid Journal   (Followers: 15, SJR: 1.514, h-index: 92)
Addictive Behaviors Reports     Open Access   (Followers: 6)
Additive Manufacturing     Hybrid Journal   (Followers: 7, SJR: 1.039, h-index: 5)
Additives for Polymers     Full-text available via subscription   (Followers: 21)
Advanced Cement Based Materials     Full-text available via subscription   (Followers: 3)
Advanced Drug Delivery Reviews     Hybrid Journal   (Followers: 133, SJR: 5.2, h-index: 222)
Advanced Engineering Informatics     Hybrid Journal   (Followers: 11, SJR: 1.265, h-index: 53)
Advanced Powder Technology     Hybrid Journal   (Followers: 17, SJR: 0.739, h-index: 33)
Advances in Accounting     Hybrid Journal   (Followers: 9, SJR: 0.299, h-index: 15)
Advances in Agronomy     Full-text available via subscription   (Followers: 15, SJR: 2.071, h-index: 82)
Advances in Anesthesia     Full-text available via subscription   (Followers: 26, SJR: 0.169, h-index: 4)
Advances in Antiviral Drug Design     Full-text available via subscription   (Followers: 3)
Advances in Applied Mathematics     Full-text available via subscription   (Followers: 6, SJR: 1.054, h-index: 35)
Advances in Applied Mechanics     Full-text available via subscription   (Followers: 11, SJR: 0.801, h-index: 26)
Advances in Applied Microbiology     Full-text available via subscription   (Followers: 22, SJR: 1.286, h-index: 49)
Advances In Atomic, Molecular, and Optical Physics     Full-text available via subscription   (Followers: 16, SJR: 3.31, h-index: 42)
Advances in Biological Regulation     Hybrid Journal   (Followers: 4, SJR: 2.277, h-index: 43)
Advances in Botanical Research     Full-text available via subscription   (Followers: 3, SJR: 0.619, h-index: 48)
Advances in Cancer Research     Full-text available via subscription   (Followers: 25, SJR: 2.215, h-index: 78)
Advances in Carbohydrate Chemistry and Biochemistry     Full-text available via subscription   (Followers: 9, SJR: 0.9, h-index: 30)
Advances in Catalysis     Full-text available via subscription   (Followers: 5, SJR: 2.139, h-index: 42)
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: 12)
Advances in Chemical Engineering     Full-text available via subscription   (Followers: 26, SJR: 0.183, h-index: 23)
Advances in Child Development and Behavior     Full-text available via subscription   (Followers: 10, SJR: 0.665, h-index: 29)
Advances in Chronic Kidney Disease     Full-text available via subscription   (Followers: 9, SJR: 1.268, h-index: 45)
Advances in Clinical Chemistry     Full-text available via subscription   (Followers: 29, SJR: 0.938, h-index: 33)
Advances in Colloid and Interface Science     Full-text available via subscription   (Followers: 18, SJR: 2.314, h-index: 130)
Advances in Computers     Full-text available via subscription   (Followers: 16, SJR: 0.223, h-index: 22)
Advances in Dermatology     Full-text available via subscription   (Followers: 12)
Advances in Developmental Biology     Full-text available via subscription   (Followers: 11)
Advances in Digestive Medicine     Open Access   (Followers: 7)
Advances in DNA Sequence-Specific Agents     Full-text available via subscription   (Followers: 5)
Advances in Drug Research     Full-text available via subscription   (Followers: 22)
Advances in Ecological Research     Full-text available via subscription   (Followers: 45, SJR: 3.25, h-index: 43)
Advances in Engineering Software     Hybrid Journal   (Followers: 26, SJR: 0.486, h-index: 10)
Advances in Experimental Biology     Full-text available via subscription   (Followers: 7)
Advances in Experimental Social Psychology     Full-text available via subscription   (Followers: 43, SJR: 5.465, h-index: 64)
Advances in Exploration Geophysics     Full-text available via subscription   (Followers: 3)
Advances in Fluorine Science     Full-text available via subscription   (Followers: 8)
Advances in Food and Nutrition Research     Full-text available via subscription   (Followers: 51, SJR: 0.674, h-index: 38)
Advances in Fuel Cells     Full-text available via subscription   (Followers: 16)
Advances in Genetics     Full-text available via subscription   (Followers: 15, SJR: 2.558, h-index: 54)
Advances in Genome Biology     Full-text available via subscription   (Followers: 11)
Advances in Geophysics     Full-text available via subscription   (Followers: 6, SJR: 2.325, h-index: 20)
Advances in Heat Transfer     Full-text available via subscription   (Followers: 22, SJR: 0.906, h-index: 24)
Advances in Heterocyclic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 0.497, h-index: 31)
Advances in Human Factors/Ergonomics     Full-text available via subscription   (Followers: 26)
Advances in Imaging and Electron Physics     Full-text available via subscription   (Followers: 2, SJR: 0.396, h-index: 27)
Advances in Immunology     Full-text available via subscription   (Followers: 36, SJR: 4.152, h-index: 85)
Advances in Inorganic Chemistry     Full-text available via subscription   (Followers: 9, SJR: 1.132, h-index: 42)
Advances in Insect Physiology     Full-text available via subscription   (Followers: 3, SJR: 1.274, h-index: 27)
Advances in Integrative Medicine     Hybrid Journal   (Followers: 6)
Advances in Intl. Accounting     Full-text available via subscription   (Followers: 4)
Advances in Life Course Research     Hybrid Journal   (Followers: 8, SJR: 0.764, h-index: 15)
Advances in Lipobiology     Full-text available via subscription   (Followers: 2)
Advances in Magnetic and Optical Resonance     Full-text available via subscription   (Followers: 9)
Advances in Marine Biology     Full-text available via subscription   (Followers: 16, SJR: 1.645, h-index: 45)
Advances in Mathematics     Full-text available via subscription   (Followers: 10, SJR: 3.261, h-index: 65)
Advances in Medical Sciences     Hybrid Journal   (Followers: 6, SJR: 0.489, h-index: 25)
Advances in Medicinal Chemistry     Full-text available via subscription   (Followers: 5)
Advances in Microbial Physiology     Full-text available via subscription   (Followers: 4, SJR: 1.44, h-index: 51)
Advances in Molecular and Cell Biology     Full-text available via subscription   (Followers: 22)
Advances in Molecular and Cellular Endocrinology     Full-text available via subscription   (Followers: 10)
Advances in Molecular Toxicology     Full-text available via subscription   (Followers: 8, SJR: 0.324, h-index: 8)
Advances in Nanoporous Materials     Full-text available via subscription   (Followers: 4)
Advances in Oncobiology     Full-text available via subscription   (Followers: 3)
Advances in Organ Biology     Full-text available via subscription   (Followers: 2)
Advances in Organometallic Chemistry     Full-text available via subscription   (Followers: 15, SJR: 2.885, h-index: 45)
Advances in Parallel Computing     Full-text available via subscription   (Followers: 7, SJR: 0.148, h-index: 11)
Advances in Parasitology     Full-text available via subscription   (Followers: 7, SJR: 2.37, h-index: 73)
Advances in Pediatrics     Full-text available via subscription   (Followers: 24, SJR: 0.4, h-index: 28)
Advances in Pharmaceutical Sciences     Full-text available via subscription   (Followers: 13)
Advances in Pharmacology     Full-text available via subscription   (Followers: 15, SJR: 1.718, h-index: 58)
Advances in Physical Organic Chemistry     Full-text available via subscription   (Followers: 8, SJR: 0.384, h-index: 26)
Advances in Phytomedicine     Full-text available via subscription  
Advances in Planar Lipid Bilayers and Liposomes     Full-text available via subscription   (Followers: 3, SJR: 0.248, h-index: 11)
Advances in Plant Biochemistry and Molecular Biology     Full-text available via subscription   (Followers: 8)
Advances in Plant Pathology     Full-text available via subscription   (Followers: 5)
Advances in Porous Media     Full-text available via subscription   (Followers: 4)
Advances in Protein Chemistry     Full-text available via subscription   (Followers: 17)
Advances in Protein Chemistry and Structural Biology     Full-text available via subscription   (Followers: 20, SJR: 1.5, h-index: 62)
Advances in Psychology     Full-text available via subscription   (Followers: 62)
Advances in Quantum Chemistry     Full-text available via subscription   (Followers: 5, SJR: 0.478, h-index: 32)
Advances in Radiation Oncology     Open Access  
Advances in Small Animal Medicine and Surgery     Hybrid Journal   (Followers: 2, SJR: 0.1, h-index: 2)
Advances in Space Biology and Medicine     Full-text available via subscription   (Followers: 5)
Advances in Space Research     Full-text available via subscription   (Followers: 360, SJR: 0.606, h-index: 65)
Advances in Structural Biology     Full-text available via subscription   (Followers: 8)
Advances in Surgery     Full-text available via subscription   (Followers: 7, SJR: 0.823, h-index: 27)
Advances in the Study of Behavior     Full-text available via subscription   (Followers: 30, SJR: 1.321, h-index: 56)
Advances in Veterinary Medicine     Full-text available via subscription   (Followers: 16)
Advances in Veterinary Science and Comparative Medicine     Full-text available via subscription   (Followers: 13)
Advances in Virus Research     Full-text available via subscription   (Followers: 5, SJR: 1.878, h-index: 68)
Advances in Water Resources     Hybrid Journal   (Followers: 44, SJR: 2.408, h-index: 94)
Aeolian Research     Hybrid Journal   (Followers: 5, SJR: 0.973, h-index: 22)
Aerospace Science and Technology     Hybrid Journal   (Followers: 330, SJR: 0.816, h-index: 49)
AEU - Intl. J. of Electronics and Communications     Hybrid Journal   (Followers: 8, SJR: 0.318, h-index: 36)
African J. of Emergency Medicine     Open Access   (Followers: 5, SJR: 0.344, h-index: 6)
Ageing Research Reviews     Hybrid Journal   (Followers: 8, SJR: 3.289, h-index: 78)
Aggression and Violent Behavior     Hybrid Journal   (Followers: 418, SJR: 1.385, h-index: 72)
Agri Gene     Hybrid Journal  
Agricultural and Forest Meteorology     Hybrid Journal   (Followers: 16, SJR: 2.18, h-index: 116)
Agricultural Systems     Hybrid Journal   (Followers: 30, SJR: 1.275, h-index: 74)
Agricultural Water Management     Hybrid Journal   (Followers: 40, SJR: 1.546, h-index: 79)
Agriculture and Agricultural Science Procedia     Open Access  
Agriculture and Natural Resources     Open Access   (Followers: 2)
Agriculture, Ecosystems & Environment     Hybrid Journal   (Followers: 55, SJR: 1.879, h-index: 120)
Ain Shams Engineering J.     Open Access   (Followers: 5, SJR: 0.434, h-index: 14)
Air Medical J.     Hybrid Journal   (Followers: 5, SJR: 0.234, h-index: 18)
AKCE Intl. J. of Graphs and Combinatorics     Open Access   (SJR: 0.285, h-index: 3)
Alcohol     Hybrid Journal   (Followers: 11, SJR: 0.922, h-index: 66)
Alcoholism and Drug Addiction     Open Access   (Followers: 8)
Alergologia Polska : Polish J. of Allergology     Full-text available via subscription   (Followers: 1)
Alexandria Engineering J.     Open Access   (Followers: 1, SJR: 0.436, h-index: 12)
Alexandria J. of Medicine     Open Access   (Followers: 1)
Algal Research     Partially Free   (Followers: 8, SJR: 2.05, h-index: 20)
Alkaloids: Chemical and Biological Perspectives     Full-text available via subscription   (Followers: 3)
Allergologia et Immunopathologia     Full-text available via subscription   (Followers: 1, SJR: 0.46, h-index: 29)
Allergology Intl.     Open Access   (Followers: 4, SJR: 0.776, h-index: 35)
Alpha Omegan     Full-text available via subscription   (SJR: 0.121, h-index: 9)
ALTER - European J. of Disability Research / Revue Européenne de Recherche sur le Handicap     Full-text available via subscription   (Followers: 9, SJR: 0.158, h-index: 9)
Alzheimer's & Dementia     Hybrid Journal   (Followers: 46, SJR: 4.289, h-index: 64)
Alzheimer's & Dementia: Diagnosis, Assessment & Disease Monitoring     Open Access   (Followers: 4)
Alzheimer's & Dementia: Translational Research & Clinical Interventions     Open Access   (Followers: 4)
Ambulatory Pediatrics     Hybrid Journal   (Followers: 5)
American Heart J.     Hybrid Journal   (Followers: 49, SJR: 3.157, h-index: 153)
American J. of Cardiology     Hybrid Journal   (Followers: 48, SJR: 2.063, h-index: 186)
American J. of Emergency Medicine     Hybrid Journal   (Followers: 40, SJR: 0.574, h-index: 65)
American J. of Geriatric Pharmacotherapy     Full-text available via subscription   (Followers: 9, SJR: 1.091, h-index: 45)
American J. of Geriatric Psychiatry     Hybrid Journal   (Followers: 14, SJR: 1.653, h-index: 93)
American J. of Human Genetics     Hybrid Journal   (Followers: 32, SJR: 8.769, h-index: 256)
American J. of Infection Control     Hybrid Journal   (Followers: 26, SJR: 1.259, h-index: 81)
American J. of Kidney Diseases     Hybrid Journal   (Followers: 32, SJR: 2.313, h-index: 172)
American J. of Medicine     Hybrid Journal   (Followers: 46, SJR: 2.023, h-index: 189)
American J. of Medicine Supplements     Full-text available via subscription   (Followers: 3)
American J. of Obstetrics and Gynecology     Hybrid Journal   (Followers: 201, SJR: 2.255, h-index: 171)
American J. of Ophthalmology     Hybrid Journal   (Followers: 59, SJR: 2.803, h-index: 148)
American J. of Ophthalmology Case Reports     Open Access   (Followers: 6)
American J. of Orthodontics and Dentofacial Orthopedics     Full-text available via subscription   (Followers: 6, SJR: 1.249, h-index: 88)
American J. of Otolaryngology     Hybrid Journal   (Followers: 24, SJR: 0.59, h-index: 45)
American J. of Pathology     Hybrid Journal   (Followers: 27, SJR: 2.653, h-index: 228)
American J. of Preventive Medicine     Hybrid Journal   (Followers: 25, SJR: 2.764, h-index: 154)
American J. of Surgery     Hybrid Journal   (Followers: 34, SJR: 1.286, h-index: 125)
American J. of the Medical Sciences     Hybrid Journal   (Followers: 12, SJR: 0.653, h-index: 70)
Ampersand : An Intl. J. of General and Applied Linguistics     Open Access   (Followers: 6)
Anaerobe     Hybrid Journal   (Followers: 4, SJR: 1.066, h-index: 51)
Anaesthesia & Intensive Care Medicine     Full-text available via subscription   (Followers: 58, SJR: 0.124, h-index: 9)
Anaesthesia Critical Care & Pain Medicine     Full-text available via subscription   (Followers: 12)
Anales de Cirugia Vascular     Full-text available via subscription  
Anales de Pediatría     Full-text available via subscription   (Followers: 2, SJR: 0.209, h-index: 27)
Anales de Pediatría (English Edition)     Full-text available via subscription  
Anales de Pediatría Continuada     Full-text available via subscription   (SJR: 0.104, h-index: 3)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 4, SJR: 2.577, h-index: 7)
Analytica Chimica Acta     Hybrid Journal   (Followers: 36, SJR: 1.548, h-index: 152)
Analytical Biochemistry     Hybrid Journal   (Followers: 164, SJR: 0.725, h-index: 154)
Analytical Chemistry Research     Open Access   (Followers: 8, SJR: 0.18, h-index: 2)
Analytical Spectroscopy Library     Full-text available via subscription   (Followers: 12)
Anesthésie & Réanimation     Full-text available via subscription   (Followers: 1)
Anesthesiology Clinics     Full-text available via subscription   (Followers: 22, SJR: 0.421, h-index: 40)
Angiología     Full-text available via subscription   (SJR: 0.124, h-index: 9)
Angiologia e Cirurgia Vascular     Open Access  

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Journal Cover Advances in Chemical Engineering
  [SJR: 0.183]   [H-I: 23]   [26 followers]  Follow
    
   Full-text available via subscription Subscription journal
   ISSN (Print) 0065-2377
   Published by Elsevier Homepage  [3089 journals]
  • Series Page
    • Abstract: Publication date: 2017
      Source:Advances in Chemical Engineering, Volume 51


      PubDate: 2017-12-12T02:10:12Z
       
  • CO2 Sorbents for Sorption-Enhanced Steam Reforming
    • Authors: Maria C. Iliuta
      Abstract: Publication date: Available online 10 November 2017
      Source:Advances in Chemical Engineering
      Author(s): Maria C. Iliuta
      Sorption-enhanced steam reforming (SESR) is an integrated process which combines reforming reaction (H2 formation) and selective separation (in situ CO2 sorption by solid sorbent materials) in a single reactor, in order to shift thermodynamically the reforming reaction and increase the hydrogen production. The key element in the SESR processes is the selection of appropriate sorbent materials. The choice of suitable sorbents for selective in situ CO2 removal from the reaction medium is a great challenge due to the severe operating conditions, especially the high temperature and the presence of steam during the sorption process. Special attention has therefore been devoted to the development of efficient materials as well as the evaluation of their performance in different SESR processes. High sorption capacity and kinetics, together with a good stability in the long-term cyclic process under severe reaction conditions, are the main expected characteristics. Many promising materials have been developed as potential sorbents, including CaO-based, hydrotalcite-based, and alkaline ceramic sorbents. Particular emphasis has been given to the development of different strategies aimed at improving the sorbents’ stability and performance in cyclic SESR process. This chapter provides an overview of different aspects of high-temperature CO2 sorbents and their application in sorption-enhanced reforming processes.

      PubDate: 2017-11-16T10:34:18Z
      DOI: 10.1016/bs.ache.2017.08.001
       
  • Series Page
    • Abstract: Publication date: 2017
      Source:Advances in Chemical Engineering, Volume 50


      PubDate: 2017-11-16T10:34:18Z
       
  • Sorption-Enhanced Water–Gas Shift
    • Authors: Jurriaan Boon; Kai Coenen; Eric van Dijk; Paul Cobden; Fausto Gallucci; Martin van Sint Annaland
      Abstract: Publication date: Available online 7 November 2017
      Source:Advances in Chemical Engineering
      Author(s): Jurriaan Boon, Kai Coenen, Eric van Dijk, Paul Cobden, Fausto Gallucci, Martin van Sint Annaland
      Sorption-enhanced water–gas shift (SEWGS) is a promising technology for precombustion CO2 capture with high energy efficiency. Hydrotalcite-based adsorbents were studied as possible solid sorbents for pressure swing adsorption under SEWGS conditions. They show high thermal and mechanical stability with sufficiently high cyclic working capacity and fast adsorption kinetics. The regenerations step (desorption of CO2 by feeding steam to the adsorbent) is slower and limits the cyclic working capacity of the adsorbent. It was found that a higher operating temperature is beneficial because of enhanced desorption kinetics. Steam induces the desorption of a second adsorption site available for CO2 which cannot be desorbed with N2. Different adsorption sites are present on the hydrotalcite material. On the basis of a dedicated set of high-pressure breakthrough experiments an adsorption isotherm has been developed which describes the interaction of CO2 and H2O with the hydrotalcite-based adsorbent over the relevant range of partial pressures. Based on the isotherm and a linear driving force approximation for intraparticle mass transfer, a reactor model has been constructed for the simulation and optimization of SEWGS cycles. A parameter study of SEWGS cycles shows that the high-pressure rinse steam improves the CO2 product purity, while the low-pressure steam purge mainly serves to improve the CO2 capture ratio. Finally, a comparative analysis of the required work of precombustion separation of CO2 and H2 shows that SEWGS outperforms conventional technologies for hydrogen–carbon dioxide separation, partly because of its inherently high CO2 capture ratio.

      PubDate: 2017-11-09T03:07:02Z
      DOI: 10.1016/bs.ache.2017.07.004
       
  • Imaging Gas Flow in Gas–Solid Catalytic Systems by Near-Infrared
           Tomography
    • Authors: Farid Aiouache
      Abstract: Publication date: Available online 27 October 2017
      Source:Advances in Chemical Engineering
      Author(s): Farid Aiouache
      Near-infrared imaging of 2D and 3D spatial resolutions allowed access to behavior of flowing gases and catalyst activity by measuring spatial distribution of composition and temperature in packed beds of low light scattering, subject to wall effects, and nonisothermal conditions. Water vapor was used as tracing species owing to high absorption coefficient in the near-infrared spectrum. Heterogeneous distribution of activity, flow maldistribution, and dynamic lags between the local mixing zones were observed and quantified. The uneven distribution of concentration and temperature highlighted the importance of mass and heat transport at gas–solid boundaries. The spatial resolution of near-infrared imaging was of importance to give reliable profiles of physical data, and dispersion coefficients and local activity were cited as examples of acceptable validation. The results were a proven stage for further developments, particularly those anticipated with infrared technology. However, key to that would be the development of affordable tunable lasers, optical accessories, and focal planar array sensors of similar sensitivities to those available in the near-infrared spectrum, allowing the technique to be applied to packed beds and other nontransparent reactive media.

      PubDate: 2017-11-01T20:17:38Z
      DOI: 10.1016/bs.ache.2017.07.002
       
  • Understanding the Performance of Automotive Catalysts via Spatial
           Resolution of Reactions Inside Honeycomb Monoliths
    • Authors: William P. Partridge; Jae-Soon Choi
      Abstract: Publication date: Available online 26 October 2017
      Source:Advances in Chemical Engineering
      Author(s): William P. Partridge, Jae-Soon Choi
      By directly resolving spatial and temporal species distributions within operating honeycomb monolith catalysts, spatially resolved capillary inlet mass spectrometry (SpaciMS) provides a uniquely enabling perspective for advancing automotive catalysis. Specifically, the ability to follow the spatiotemporal evolution of reactions throughout the catalyst is a significant advantage over inlet-and-effluent-limited analysis. Intracatalyst resolution elucidates numerous catalyst details including the network and sequence of reactions, clarifying reaction pathways; the relative rates of different reactions and impacts of operating conditions and catalyst state; and reaction dynamics and intermediate species that exist only within the catalyst. These details provide a better understanding of how the catalyst functions and have basic and practical benefits; e.g., catalyst system design; strategies for on-road catalyst state assessment, control, and on-board diagnostics; and creating robust and accurate predictive catalyst models. Moreover, such spatiotemporally distributed data provide for critical model assessment, and identification of improvement opportunities that might not be apparent from effluent assessment; i.e., while an incorrectly formulated model may provide correct effluent predictions, one that can accurately predict the spatiotemporal evolution of reactions along the catalyst channels will be more robust, accurate, and reliable. In such ways, intracatalyst diagnostics comprehensively enable improved design and development tools, and faster and lower-cost development of more efficient and durable automotive catalyst systems. Beyond these direct contributions, SpaciMS has spawned and been applied to enable other analytical techniques for resolving transient distributed intracatalyst performance. This chapter focuses on SpaciMS applications and associated catalyst insights and improvements, with specific sections related to lean NO x traps, selective catalytic reduction catalysts, oxidation catalysts, and particulate filters. The objective is to promote broader use and development of intracatalyst analytical methods, and thereby expand the insights resulting from this detailed perspective for advancing automotive catalyst technologies.

      PubDate: 2017-11-01T20:17:38Z
      DOI: 10.1016/bs.ache.2017.09.002
       
  • Analysis of the Impact of Gas-Phase Chemistry in Adiabatic CPO Reactors by
           Axially Resolved Measurements
    • Authors: Alessandra Beretta; Gianpiero Groppi; Andrea Carrera; Alessandro Donazzi
      Abstract: Publication date: Available online 26 October 2017
      Source:Advances in Chemical Engineering
      Author(s): Alessandra Beretta, Gianpiero Groppi, Andrea Carrera, Alessandro Donazzi
      This chapter focuses on the contribution that the in situ probing of temperature and concentration profiles in high-temperature and short contact time partial oxidation processes has given to the understanding of the interplay between homogeneous and heterogeneous chemistry. Experimental evidence was collected in our laboratory on the gas-phase conversion of C2+ fuels in adiabatic CPO reformers. The formation of short-chain hydrocarbons can promote the syngas performance, since the fed fuel is partly transformed into highly reactive species which further react on the surface producing CO and H2; however, short olefins are soot/coke precursors and the surface condensation or breakthrough of such species is highly undesired. The experience from CPO reactors and other similar processes allows to understand the effects that pressure and dilution, the nature of the fuel and of the catalyst, and heat dispersions across the reactor have on the final fate of the cracking intermediates. The possibility to tune the relative contributions of the gas-phase and the surface chemistry in order to limit the catalyst hot spot temperature is also discussed.

      PubDate: 2017-11-01T20:17:38Z
      DOI: 10.1016/bs.ache.2017.09.001
       
  • Sorption-Enhanced Reaction With Simulated Moving Bed Reactor and PermSMBR
           Technologies
    • Authors: Dânia S.M. Constantino; Rui P.V. Faria; Alírio E. Rodrigues
      Abstract: Publication date: Available online 16 October 2017
      Source:Advances in Chemical Engineering
      Author(s): Dânia S.M. Constantino, Rui P.V. Faria, Alírio E. Rodrigues
      Two of the most recent and promising multifunctional reactors, the Simulated Moving Bed Reactor and the Simulated Moving Bed Membrane Reactor, for the synthesis of oxygenated compounds, were addressed focusing on the methodology for the development and implementation of these technologies based on experimental data and suitable mathematical models. Moreover, different case studies, involving acetals and esters, using the different reactor configurations were illustrated. The two types of reactors were compared under the same operating conditions and, after that, individually optimized in order to find the optimal operating conditions for which the maximum performance is achieved. The Simulated Moving Bed Reactor proved to be a very competitive process for the synthesis that involves equilibrium-limited reactions. This technology, which combines reaction with chromatographic separation, revealed a strong ability to increase the equilibrium conversion with high productivities and reasonable desorbent consumptions by the continuous removal of water through selective adsorption. However, diluted products are obtained and subsequent units for the products purification are required. Combining the Simulated Moving Bed Reactor with water-selective membranes, a new technology was generated, the Simulated Moving Bed Membrane Reactor also designated by PermSMBR. This recent concept that comprises reaction and two different separation techniques exhibited excellent performance for acetals and esters synthesis, even improving the previous reactor productivities with significant reduction on the desorbent demand. Furthermore, its dimensions can be reduced without affecting the productivity, leading to higher savings on the desorbent consumption and lower associated desorbent recovery costs.

      PubDate: 2017-10-17T16:33:31Z
      DOI: 10.1016/bs.ache.2017.07.005
       
  • Reactor Design for Sorption-Enhanced Reforming Using CaCu Chemical Loops
    • Authors: José R. Fernández; Juan C. Abanades
      Abstract: Publication date: Available online 14 September 2017
      Source:Advances in Chemical Engineering
      Author(s): José R. Fernández, Juan C. Abanades
      The growing concern about global warming has stressed the need for novel H2 production technologies with CO2 capture. The sorption-enhanced reforming (SER) allows a H2-rich product gas to be obtained at moderate operating conditions. The CaCu looping process arises as a promising SER method as it provides a viable solution for regenerating the CO2 sorbent used during the SER with potentially low energy penalties and costs. This chapter compiles the main recent advances in the CaCu process, focusing on reactor, and process design and the experimental work needed to validate the performance of reactors and materials. Significant progress has also been made in simulating this system in power plants and industrial systems.

      PubDate: 2017-09-18T23:54:37Z
      DOI: 10.1016/bs.ache.2017.07.003
       
  • Spatially Resolved Operando Measurements in Heterogeneous Catalytic
           Reactors
    • Authors: Po-Yu Peng; Hoang Nguyen; Michael P. Harold; Dan Luss
      Abstract: Publication date: Available online 12 September 2017
      Source:Advances in Chemical Engineering
      Author(s): Po-Yu Peng, Hoang Nguyen, Michael P. Harold, Dan Luss
      Measuring the spatiotemporal temperature and reacting species concentrations of a reacting system under realistic conditions is essential to optimize the reactor design and operation. Conventional measurements of the inlet and outlet values provide only a partial picture of the reactor behavior. We describe the novel method coherent optical frequency domain reflectometry (c-OFDR) which provides unparalleled information about the spatiotemporal temperature in a catalytic reactor. c-OFDR launches a laser beam through an optical fiber positioned inside a reactor. The spatial dependence of temperature is determined through the measured spectral shift of reflected scattering light frequency. The advantages of c-OFDR include high spatial and temporal resolution (3mm and 0.9Hz), broad operating range (up to 800°C), noninvasive measurement (~125μm OD), stationary, and chemically resistant (gold-coated) sensor. In addition to describing the theory and standard operation of c-OFDR, we demonstrate c-OFDR for several applications involving reaction in a catalytic monolith during both steady-state and transient operation. The combination of c-OFDR with spatially resolved capillary inlet mass spectrometry (SpaciMS) provides detailed characterization of a catalytic reactor under periodic operation. Combined SpaciMS and c-OFDR successfully follow the cyclic lean/rich behavior during temperature programmed oxidation experiments. SpaciMS invasiveness is assessed through systematic measurement of the temperature by c-OFDR and concentration by SpaciMS. In an ideal adiabatic reactor, the temperature peak and complete reactant conversion should occur at the same position. Our experiments enabled generation of a map of operating conditions under which this did not occur which helps identify when the SpaciMS method is invasive.

      PubDate: 2017-09-18T23:54:37Z
      DOI: 10.1016/bs.ache.2017.07.001
       
  • In Situ Spatially Resolved Techniques for the Investigation of Packed Bed
           Catalytic Reactors: Current Status and Future Outlook of Spaci-FB
    • Authors: Alexandre Goguet; Caomhán Stewart; Jamal Touitou; Kevin Morgan
      Abstract: Publication date: Available online 2 August 2017
      Source:Advances in Chemical Engineering
      Author(s): Alexandre Goguet, Caomhán Stewart, Jamal Touitou, Kevin Morgan
      Over the past two decades a large effort has been dedicated to the development and optimization of techniques aimed at resolving the evolution of the chemistry within structured catalysts such as monoliths or foams under operando conditions. This approach, known as spatial resolution, is a powerful tool in the unraveling of complex reaction networks, as well as kinetic characterization. The most recent developments have been made at providing such spatial resolution at the early stages of the catalyst development, i.e., when the catalyst is still in its powdered form. Techniques aimed at providing spatial resolutions of the gas composition, of structural information, and of adsorbate distributions via X-ray and vibrational-based spectroscopies, respectively, are developing rapidly. The ability to simultaneously operate these spatially resolved approaches has the potential of providing a powerful platform for reaction mechanism investigations. Herein, we discuss and evaluate the development of a spatially resolved technique for powdered catalysts developed at Queen's University Belfast, namely the Spaci-FB. Furthermore, some aims and aspirations for further evolution of spatially resolved techniques are presented.

      PubDate: 2017-08-31T16:26:15Z
      DOI: 10.1016/bs.ache.2017.05.001
       
 
 
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