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MATHEMATICS (758 journals)                  1 2 3 4 | Last

Showing 1 - 200 of 538 Journals sorted alphabetically
Abakós     Open Access   (Followers: 4)
Abhandlungen aus dem Mathematischen Seminar der Universitat Hamburg     Hybrid Journal   (Followers: 4)
Academic Voices : A Multidisciplinary Journal     Open Access   (Followers: 2)
Accounting Perspectives     Full-text available via subscription   (Followers: 7)
ACM Transactions on Algorithms (TALG)     Hybrid Journal   (Followers: 15)
ACM Transactions on Computational Logic (TOCL)     Hybrid Journal   (Followers: 3)
ACM Transactions on Mathematical Software (TOMS)     Hybrid Journal   (Followers: 6)
ACS Applied Materials & Interfaces     Hybrid Journal   (Followers: 37)
Acta Applicandae Mathematicae     Hybrid Journal   (Followers: 1)
Acta Mathematica     Hybrid Journal   (Followers: 12)
Acta Mathematica Hungarica     Hybrid Journal   (Followers: 2)
Acta Mathematica Scientia     Full-text available via subscription   (Followers: 5)
Acta Mathematica Sinica, English Series     Hybrid Journal   (Followers: 6)
Acta Mathematica Vietnamica     Hybrid Journal  
Acta Mathematicae Applicatae Sinica, English Series     Hybrid Journal  
Advanced Science Letters     Full-text available via subscription   (Followers: 12)
Advances in Applied Clifford Algebras     Hybrid Journal   (Followers: 4)
Advances in Calculus of Variations     Hybrid Journal   (Followers: 6)
Advances in Catalysis     Full-text available via subscription   (Followers: 5)
Advances in Complex Systems     Hybrid Journal   (Followers: 9)
Advances in Computational Mathematics     Hybrid Journal   (Followers: 21)
Advances in Decision Sciences     Open Access   (Followers: 3)
Advances in Difference Equations     Open Access   (Followers: 3)
Advances in Fixed Point Theory     Open Access   (Followers: 6)
Advances in Geosciences (ADGEO)     Open Access   (Followers: 17)
Advances in Linear Algebra & Matrix Theory     Open Access   (Followers: 10)
Advances in Materials Science     Open Access   (Followers: 17)
Advances in Mathematical Physics     Open Access   (Followers: 7)
Advances in Mathematics     Full-text available via subscription   (Followers: 14)
Advances in Nonlinear Analysis     Open Access  
Advances in Numerical Analysis     Open Access   (Followers: 7)
Advances in Operations Research     Open Access   (Followers: 12)
Advances in Porous Media     Full-text available via subscription   (Followers: 5)
Advances in Pure and Applied Mathematics     Hybrid Journal   (Followers: 8)
Advances in Pure Mathematics     Open Access   (Followers: 9)
Advances in Science and Research (ASR)     Open Access   (Followers: 6)
Aequationes Mathematicae     Hybrid Journal   (Followers: 2)
African Journal of Educational Studies in Mathematics and Sciences     Full-text available via subscription   (Followers: 7)
African Journal of Mathematics and Computer Science Research     Open Access   (Followers: 5)
Afrika Matematika     Hybrid Journal   (Followers: 1)
Air, Soil & Water Research     Open Access   (Followers: 14)
AKSIOMA Journal of Mathematics Education     Open Access   (Followers: 2)
Al-Jabar : Jurnal Pendidikan Matematika     Open Access   (Followers: 1)
Algebra and Logic     Hybrid Journal   (Followers: 7)
Algebra Colloquium     Hybrid Journal   (Followers: 4)
Algebra Universalis     Hybrid Journal   (Followers: 2)
Algorithmic Operations Research     Open Access   (Followers: 5)
Algorithms     Open Access   (Followers: 11)
Algorithms Research     Open Access   (Followers: 1)
American Journal of Computational and Applied Mathematics     Open Access   (Followers: 8)
American Journal of Mathematical Analysis     Open Access  
American Journal of Mathematics     Full-text available via subscription   (Followers: 6)
American Journal of Operations Research     Open Access   (Followers: 6)
An International Journal of Optimization and Control: Theories & Applications     Open Access   (Followers: 11)
Anadol University Journal of Science and Technology B : Theoritical Sciences     Open Access  
Analele Universitatii Ovidius Constanta - Seria Matematica     Open Access  
Analysis and Applications     Hybrid Journal   (Followers: 1)
Analysis and Mathematical Physics     Hybrid Journal   (Followers: 6)
Analysis Mathematica     Full-text available via subscription  
Analysis. International mathematical journal of analysis and its applications     Hybrid Journal   (Followers: 3)
Annales Mathematicae Silesianae     Open Access   (Followers: 2)
Annales mathématiques du Québec     Hybrid Journal   (Followers: 4)
Annales Universitatis Mariae Curie-Sklodowska, sectio A – Mathematica     Open Access   (Followers: 1)
Annales Universitatis Paedagogicae Cracoviensis. Studia Mathematica     Open Access  
Annali di Matematica Pura ed Applicata     Hybrid Journal   (Followers: 1)
Annals of Combinatorics     Hybrid Journal   (Followers: 4)
Annals of Data Science     Hybrid Journal   (Followers: 13)
Annals of Discrete Mathematics     Full-text available via subscription   (Followers: 7)
Annals of Mathematics     Full-text available via subscription   (Followers: 2)
Annals of Mathematics and Artificial Intelligence     Hybrid Journal   (Followers: 12)
Annals of Pure and Applied Logic     Open Access   (Followers: 4)
Annals of the Alexandru Ioan Cuza University - Mathematics     Open Access  
Annals of the Institute of Statistical Mathematics     Hybrid Journal   (Followers: 1)
Annals of West University of Timisoara - Mathematics     Open Access  
Annals of West University of Timisoara - Mathematics and Computer Science     Open Access   (Followers: 1)
Annuaire du Collège de France     Open Access   (Followers: 6)
ANZIAM Journal     Open Access   (Followers: 1)
Applicable Algebra in Engineering, Communication and Computing     Hybrid Journal   (Followers: 2)
Applications of Mathematics     Hybrid Journal   (Followers: 3)
Applied Categorical Structures     Hybrid Journal   (Followers: 4)
Applied Computational Intelligence and Soft Computing     Open Access   (Followers: 14)
Applied Mathematics     Open Access   (Followers: 4)
Applied Mathematics     Open Access   (Followers: 8)
Applied Mathematics & Optimization     Hybrid Journal   (Followers: 10)
Applied Mathematics - A Journal of Chinese Universities     Hybrid Journal   (Followers: 1)
Applied Mathematics and Nonlinear Sciences     Open Access  
Applied Mathematics Letters     Full-text available via subscription   (Followers: 3)
Applied Mathematics Research eXpress     Hybrid Journal   (Followers: 1)
Applied Network Science     Open Access   (Followers: 3)
Applied Numerical Mathematics     Hybrid Journal   (Followers: 5)
Applied Spatial Analysis and Policy     Hybrid Journal   (Followers: 7)
Arab Journal of Mathematical Sciences     Open Access   (Followers: 4)
Arabian Journal of Mathematics     Open Access   (Followers: 2)
Archive for Mathematical Logic     Hybrid Journal   (Followers: 3)
Archive of Applied Mechanics     Hybrid Journal   (Followers: 6)
Archive of Numerical Software     Open Access  
Archives of Computational Methods in Engineering     Hybrid Journal   (Followers: 6)
Arkiv för Matematik     Hybrid Journal   (Followers: 1)
Armenian Journal of Mathematics     Open Access   (Followers: 1)
Arnold Mathematical Journal     Hybrid Journal   (Followers: 1)
Artificial Satellites     Open Access   (Followers: 25)
Asia-Pacific Journal of Operational Research     Hybrid Journal   (Followers: 3)
Asian Journal of Algebra     Open Access   (Followers: 1)
Asian-European Journal of Mathematics     Hybrid Journal   (Followers: 3)
Australian Mathematics Teacher, The     Full-text available via subscription   (Followers: 7)
Australian Primary Mathematics Classroom     Full-text available via subscription   (Followers: 5)
Australian Senior Mathematics Journal     Full-text available via subscription   (Followers: 2)
Automatic Documentation and Mathematical Linguistics     Hybrid Journal   (Followers: 5)
Axioms     Open Access   (Followers: 1)
Baltic International Yearbook of Cognition, Logic and Communication     Open Access   (Followers: 1)
Basin Research     Hybrid Journal   (Followers: 5)
BIBECHANA     Open Access   (Followers: 2)
Biomath     Open Access  
BIT Numerical Mathematics     Hybrid Journal   (Followers: 1)
Boletim Cearense de Educação e História da Matemática     Open Access  
Boletim de Educação Matemática     Open Access  
Boletín de la Sociedad Matemática Mexicana     Hybrid Journal  
Bollettino dell'Unione Matematica Italiana     Full-text available via subscription   (Followers: 2)
British Journal of Mathematical and Statistical Psychology     Full-text available via subscription   (Followers: 20)
Bruno Pini Mathematical Analysis Seminar     Open Access  
Buletinul Academiei de Stiinte a Republicii Moldova. Matematica     Open Access   (Followers: 13)
Bulletin des Sciences Mathamatiques     Full-text available via subscription   (Followers: 4)
Bulletin of Dnipropetrovsk University. Series : Communications in Mathematical Modeling and Differential Equations Theory     Open Access   (Followers: 3)
Bulletin of Mathematical Sciences     Open Access   (Followers: 1)
Bulletin of Symbolic Logic     Full-text available via subscription   (Followers: 2)
Bulletin of the Australian Mathematical Society     Full-text available via subscription   (Followers: 1)
Bulletin of the Brazilian Mathematical Society, New Series     Hybrid Journal  
Bulletin of the Iranian Mathematical Society     Hybrid Journal  
Bulletin of the London Mathematical Society     Hybrid Journal   (Followers: 3)
Bulletin of the Malaysian Mathematical Sciences Society     Hybrid Journal  
Calculus of Variations and Partial Differential Equations     Hybrid Journal  
Canadian Journal of Mathematics / Journal canadien de mathématiques     Hybrid Journal  
Canadian Journal of Science, Mathematics and Technology Education     Hybrid Journal   (Followers: 20)
Canadian Mathematical Bulletin     Hybrid Journal  
Carpathian Mathematical Publications     Open Access   (Followers: 1)
Catalysis in Industry     Hybrid Journal   (Followers: 1)
CEAS Space Journal     Hybrid Journal   (Followers: 2)
CHANCE     Hybrid Journal   (Followers: 5)
Chaos, Solitons & Fractals     Hybrid Journal   (Followers: 3)
Chaos, Solitons & Fractals : X     Open Access  
ChemSusChem     Hybrid Journal   (Followers: 8)
Chinese Annals of Mathematics, Series B     Hybrid Journal  
Chinese Journal of Catalysis     Full-text available via subscription   (Followers: 2)
Chinese Journal of Mathematics     Open Access  
Clean Air Journal     Full-text available via subscription   (Followers: 1)
Cogent Mathematics     Open Access   (Followers: 2)
Cognitive Computation     Hybrid Journal   (Followers: 3)
Collectanea Mathematica     Hybrid Journal  
COMBINATORICA     Hybrid Journal  
Combinatorics, Probability and Computing     Hybrid Journal   (Followers: 4)
Combustion Theory and Modelling     Hybrid Journal   (Followers: 15)
Commentarii Mathematici Helvetici     Hybrid Journal  
Communications in Advanced Mathematical Sciences     Open Access  
Communications in Combinatorics and Optimization     Open Access  
Communications in Contemporary Mathematics     Hybrid Journal  
Communications in Mathematical Physics     Hybrid Journal   (Followers: 4)
Communications On Pure & Applied Mathematics     Hybrid Journal   (Followers: 3)
Complex Analysis and its Synergies     Open Access   (Followers: 3)
Complex Variables and Elliptic Equations: An International Journal     Hybrid Journal  
Composite Materials Series     Full-text available via subscription   (Followers: 9)
Compositio Mathematica     Full-text available via subscription  
Comptes Rendus Mathematique     Full-text available via subscription  
Computational and Applied Mathematics     Hybrid Journal   (Followers: 4)
Computational and Mathematical Methods in Medicine     Open Access   (Followers: 2)
Computational and Mathematical Organization Theory     Hybrid Journal   (Followers: 2)
Computational Complexity     Hybrid Journal   (Followers: 4)
Computational Mathematics and Modeling     Hybrid Journal   (Followers: 10)
Computational Mechanics     Hybrid Journal   (Followers: 5)
Computational Methods and Function Theory     Hybrid Journal  
Computational Optimization and Applications     Hybrid Journal   (Followers: 8)
Computers & Mathematics with Applications     Full-text available via subscription   (Followers: 10)
Concrete Operators     Open Access   (Followers: 5)
Confluentes Mathematici     Hybrid Journal  
Contributions to Game Theory and Management     Open Access  
COSMOS     Hybrid Journal  
Cryptography and Communications     Hybrid Journal   (Followers: 13)
Cuadernos de Investigación y Formación en Educación Matemática     Open Access  
Cubo. A Mathematical Journal     Open Access  
Current Research in Biostatistics     Open Access   (Followers: 8)
Czechoslovak Mathematical Journal     Hybrid Journal   (Followers: 1)
Demographic Research     Open Access   (Followers: 14)
Demonstratio Mathematica     Open Access  
Dependence Modeling     Open Access  
Design Journal : An International Journal for All Aspects of Design     Hybrid Journal   (Followers: 31)
Developments in Clay Science     Full-text available via subscription   (Followers: 1)
Developments in Mineral Processing     Full-text available via subscription   (Followers: 3)
Dhaka University Journal of Science     Open Access  
Differential Equations and Dynamical Systems     Hybrid Journal   (Followers: 4)
Differentsial'nye Uravneniya     Open Access  
Discrete Mathematics     Hybrid Journal   (Followers: 8)
Discrete Mathematics & Theoretical Computer Science     Open Access  
Discrete Mathematics, Algorithms and Applications     Hybrid Journal   (Followers: 2)
Discussiones Mathematicae - General Algebra and Applications     Open Access  
Discussiones Mathematicae Graph Theory     Open Access   (Followers: 2)
Diskretnaya Matematika     Full-text available via subscription  
Dnipropetrovsk University Mathematics Bulletin     Open Access  
Doklady Akademii Nauk     Open Access  
Doklady Mathematics     Hybrid Journal  
Duke Mathematical Journal     Full-text available via subscription   (Followers: 1)
Eco Matemático     Open Access  

        1 2 3 4 | Last

Similar Journals
Journal Cover
Developments in Clay Science
Citation Impact (citeScore): 1
Number of Followers: 1  
  Full-text available via subscription Subscription journal
ISSN (Print) 1572-4352
Published by Elsevier Homepage  [3183 journals]
  • Chapter 1 General Introduction
    • Authors: F. Bergaya; W.P. Gates; J. Madejová; J.T. Kloprogge; D. Bain
      Pages: 1 - 5
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): F. Bergaya, W.P. Gates, J. Madejová, J.T. Kloprogge, D. Bain

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00001-1
      Issue No: Vol. 8 (2017)
  • Chapter 2 Theoretical Aspects of Infrared and Raman Spectroscopies
    • Authors: E. Balan; J.T. Kloprogge
      Pages: 6 - 33
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): E. Balan, J.T. Kloprogge
      This chapter introduces the physical basis of infrared and Raman spectroscopies. Starting from standard harmonic lattice dynamics, a special attention is given to the relationship between the atomic-scale vibrational properties of the clay mineral and the spectroscopic quantities actually measured. The expression of the low-frequency dielectric permittivity tensor of the clay mineral is recalled, and the specifics related to measurements on powder samples are underlined. Standard approaches accounting for the composite nature of the measured samples are discussed. Finally, quantum mechanical tools that can be used to compute the vibrational spectra from clay mineral structures are briefly exposed.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00002-3
      Issue No: Vol. 8 (2017)
  • Chapter 3 Modern Infrared and Raman Instrumentation and Sampling Methods
    • Authors: G.D. Chryssikos
      Pages: 34 - 63
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): G.D. Chryssikos
      Since the time of Farmer's famous book on the infrared spectra of minerals, infrared (IR) spectroscopy and, to a lesser extent, Raman spectroscopy have become essential and widespread tools for deciphering the chemical structure of clays and clay minerals, their natural inorganic admixtures, or the organics adsorbed on their surfaces. This chapter aims at providing a review of the design of modern IR and Raman spectrometers, adapted to the specific needs of the clay scientist. The various IR and Raman measurement configurations are presented and discussed on the basis of ‘best practise’ examples, selected among the old and recent literature. The physics background is kept to the necessary minimum, but key references are provided for further elaboration by the interested reader. Three general priorities in data acquisition are highlighted, wherever possible. First, sampling is discussed over a gamut of sample sizes, from single particles to massive rocks or drill-cores. This is justified by the need to address the well-known heterogeneity of clays, which is manifested over a hierarchy of vastly different scales. Second, emphasis is placed on sampling techniques that can be considered as least invasive to the sample. These techniques are valued because they allow the study of clays in (or towards) equilibrium to their natural or man-made environment, and also because they are time saving and suitable for high-throughput acquisition and analysis. Finally, measurement strategies involving the, ideally synchronous, study of the same sample or process by more than one technique (at least one of which is vibrational) are pointed out. This is because these strategies can bring together different facets of experimental evidence towards a common description of clay minerals.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00003-5
      Issue No: Vol. 8 (2017)
  • Chapter 4 Spectral Manipulation and Introduction to Multivariate Analysis
    • Authors: G.D. Chryssikos; W.P. Gates
      Pages: 64 - 106
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): G.D. Chryssikos, W.P. Gates
      One way of characterising clay minerals is by means of their vibrational spectra. These spectra are complicated because they reflect the structural complexity of clay minerals on the scale of the chemical bond and their chemical, mineralogical, geological or other heterogeneity on any larger scale. This chapter introduces methods for extracting the information content of vibrational spectra of clay minerals. A number of popular mathematical pretreatments regarding the smoothing of noise, the elimination of nonvibrational responses (conversely, the selective enhancement of the vibrational features) or the various normalisations needed for spectral comparisons is reviewed. The two main techniques for analysing complex band shapes, namely band decomposition and derivative analysis, are compared in detail. Whereas these pretreatments can be applied to single spectra, a different approach is needed to mine the information hidden in large spectral datasets. Multivariate analysis is introduced as a toolbox for expressing the spectral variability within such datasets in terms of latent independent descriptors (vectors, loadings, principal components) and also for correlating (projecting) the latent structures with independent measurements on the same set of samples (chemometrics). A section is devoted to the desired characteristics of the spectral and independent property datasets, and another to validation procedures, which are critical for determining the nontrivial dimensionality, hence the robustness, of the method. Examples of two of the most popular multivariate techniques, principal component analysis and partial least squares are provided in the context of fundamental research and industrial applications, respectively.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00004-7
      Issue No: Vol. 8 (2017)
  • Chapter 5 IR Spectra of Clay Minerals
    • Authors: J. Madejová; W.P. Gates; S. Petit
      Pages: 107 - 149
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J. Madejová, W.P. Gates, S. Petit
      This chapter presents typical mid-IR (MIR) and near-IR (NIR) spectra of different clay mineral families and discusses how basic information on crystal chemistry can be derived. MIR spectroscopy has been applied to clay minerals studies since the early 1960s, but in more recent decades NIR spectroscopy has become more commonly applied to the study of clay minerals. These complementary techniques provide information concerning their structure, ordering or chemical composition, including different types of isomorphous substitutions within clay mineral species. The emphasis is on interpretation of the MIR and NIR spectra of selected representative specimens of the main clay mineral groups, based on the well-known work of V.C. Farmer and on more recent published literature.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00005-9
      Issue No: Vol. 8 (2017)
  • Chapter 6 Raman Spectroscopy of Clay Minerals
    • Authors: J.T. Kloprogge
      Pages: 150 - 199
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J.T. Kloprogge
      Raman spectroscopy of clay minerals has received less attention than infrared (IR) spectroscopy in the past, generally due to the weakness of the Raman scattered signal, laser-induced photo-degradation of the sample, and the occurrence of fluorescence, which often swamps the signal. Progress in instrumentation, however, has improved the quality of the Raman spectra and now enables the investigation of clay minerals in more detail. This chapter reports on comprehensive Raman spectroscopic studies of selected representatives of the main clay mineral groups following literature published mainly during the last 20 years. The emphasis is on the interpretation of the individual Raman vibrational modes, based not only on the comparison with other minerals, but also on the calculations and molecular modelling, providing theoretical values of the individual vibrational modes.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00006-0
      Issue No: Vol. 8 (2017)
  • Chapter 7 Applications of NIR/MIR to Determine Site Occupancy in Smectites
    • Authors: W.P. Gates; S. Petit; J. Madejová
      Pages: 200 - 221
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): W.P. Gates, S. Petit, J. Madejová
      The chemical composition of clay minerals directly influences their infrared (IR) spectra and follows basic rules associated with valence, atomic or molecular mass and ionic size. This fact has been exploited for many decades to assess and unambiguously identify IR absorbance bands, and in the past three decades, to quantify specific site occupancy studying the IR spectrum.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00007-2
      Issue No: Vol. 8 (2017)
  • Chapter 8 Application of Vibrational Spectroscopy in Clay Minerals
    • Authors: J.T. Kloprogge
      Pages: 222 - 287
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J.T. Kloprogge
      Clay mineral synthesis has been an important subject to which vibrational spectroscopy has been intimately entwined since the 1960s. In the past two decades, the complexity of synthetic clay mineral systems has increased as clay scientists have gained better understanding of the conditions, chemistries and mechanisms of clay mineral synthesis. These advances could not have been possible without the detailed study of starting, intermediate and final materials—of both successful and failed synthesis experiments—by vibrational spectroscopic methods. This chapter provides a detailed review of the current state of science in applications of IR and Raman spectroscopy to the study of clay mineral syntheses.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00008-4
      Issue No: Vol. 8 (2017)
  • Chapter 9 Infrared Studies of Clay Mineral-Water Interactions
    • Authors: C.T. Johnston
      Pages: 288 - 309
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): C.T. Johnston
      Water is an integral part of many clay mineral structures and can be found in diverse nano-confined environments. Clay mineral-water interactions are critically linked to essentially all physical, chemical, and biological aspects of clay science. Infrared spectroscopy is particularly sensitive to the vibrational bands of both adsorbed H2O and structural OH groups. The application of infrared and Raman methods to study clay mineral-water interactions have provided chemical insights that include clay mineral-swelling, hysteresis, molecular mechanisms of water adsorption, chemical reactivity, cation exchange, hydrophobic/hydrophilic nature of clay surfaces, and clay mineral-organic interactions. Spectroscopic information from clay mineral-water studies comes from examining the vibrational changes that occur to H2O molecules in close proximity to clay surfaces, and from spectral changes from structural OH groups of the clay mineral that are influenced by changes in water content.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00009-6
      Issue No: Vol. 8 (2017)
  • Chapter 11 Raman and Infrared Spectroscopies of Intercalated Kaolinite
           Groups Minerals
    • Authors: J.T. Kloprogge
      Pages: 343 - 410
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J.T. Kloprogge
      Other than the naturally occurring halloysite, expansion of the interlayer space of the kaolinite group minerals can only be achieved by intercalation of various molecules (hydrazine, urea, formamide, dimethylsulphoxide and various acetate salts). The structure, mechanisms of formation and thermal stability of these intercalate complexes has been the subject of study since the 1960s and vibration spectroscopy has been seminal in its ability to solve many complex issues associated with intercalate complexes. Indeed, most of the current understanding of the various intercalates of kaolin are a direct result if study by infrared (IR) or Raman spectroscopy, individually, or in combination with each other or other methods, because of the importance of hydrogen (H) bonding in these intercalates. This chapter provides a thorough overview of spectral interpretations of the interactions between intercalated (and physically adsorbed) molecules and the mineral surface functional groups. Considerable attention is given to the mechanisms of bonding between the guest molecule and the host mineral.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00011-4
      Issue No: Vol. 8 (2017)
  • Chapter 12 Infrared and Raman Spectroscopies of Pillared Clays
    • Authors: J.T. Kloprogge
      Pages: 411 - 446
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J.T. Kloprogge
      This chapter reviews the application of vibration spectroscopy to the study of pillared interlayer clay minerals, or more commonly, pillared clays. Infrared (IR) and Raman spectroscopies have proven useful in assessing pillared clay structural properties and compositions, and have also proven to be highly complementary to X-ray diffraction and nuclear magnetic resonance spectroscopy in detailing the mechanisms of pillared clay formation.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00012-6
      Issue No: Vol. 8 (2017)
  • Chapter 14 Remote Detection of Clay Minerals
    • Authors: J.L. Bishop; J.R. Michalski; J. Carter
      Pages: 482 - 514
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J.L. Bishop, J.R. Michalski, J. Carter
      Spectral remote sensing in the visible/near-infrared (VNIR) and mid-IR (MIR) regions has enabled detection and characterisation of multiple clays and clay minerals on Earth and in the Solar System. Remote sensing on Earth poses the greatest challenge due to atmospheric absorptions that interfere with detection of surface minerals. Still, a greater variety of clay minerals have been observed on Earth than other bodies due to extensive aqueous alteration on our planet. Clay minerals have arguably been mapped in more detail on the planet Mars because they are not masked by vegetation on that planet and the atmosphere is less of a hindrance. Fe/Mg-smectite is the most abundant clay mineral on the surface of Mars and is also common in meteorites and comets where clay minerals are detected.

      PubDate: 2017-12-11T18:40:21Z
      DOI: 10.1016/b978-0-08-100355-8.00014-x
      Issue No: Vol. 8 (2017)
  • Acknowledgements
    • Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8

      PubDate: 2017-12-11T18:40:21Z
  • Chapter 10 Analysis of Organoclays and Organic Adsorption by Clay Minerals
    • Authors: H.P. Zhu
      Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): H.P. He, J. Zhu
      This chapter defines ‘organoclays’ (OC) and discusses their structure as well as the molecular environment of the loaded, or intercalated, organic modifiers. Major accomplishments in OC research over the last decades are presented, including where vibrational spectroscopy has been applied. This chapter also describes the factors used to control OC basal spacing and the molecular environment of the intercalated quaternary ammonium cation within interlayer space mainly based on X-ray diffraction (XRD) patterns and Fourier transform infrared (FTIR) spectra. These factors include alkyl chain length and number, packing density, temperature and water molecules. The FTIR spectral features of OC are introduced with assignments relating to the adsorbed organic modifiers and contaminants. The last section focuses on an outlook of the synthesis and characterization of OC.

      PubDate: 2017-12-11T18:40:21Z
  • Chapter 13 NIR Contribution to The Study of Modified Clay Minerals
    • Abstract: Publication date: 2017
      Source:Developments in Clay Science, Volume 8
      Author(s): J. Madejová, H. Pálková
      Clay minerals are abundant, inexpensive and environmentally friendly materials with a huge potential for diverse industrial and environmental applications. Their properties can be considerably modified by mechanical, thermal or chemical handling. Mid infrared spectroscopy (MIR), 4000–400cm−1 spectral region, is a useful and widely available tool for the characterization of modified clay materials. In contrast, the utilization of near IR (NIR) spectroscopy (8000–4000cm−1) is rather rare despite its benefits, which include the simplicity and non-destructive character of sample preparation. This chapter reviews the potential of NIR spectroscopy to examine the modification of structure and properties of clay minerals. The NIR spectra of selected minerals are analyzed in detail in order to bring new information often not available using MIR spectroscopy. The chapter starts with a presentation of how dry grinding partly destroys clay minerals, providing materials with increased specific surface area (SSA). Further attention is given to the effects of heat treatment, such as layer charge reduction, as well as acid activation in producing materials with increased SSA, porosity and acidity. The different aspects of the interactions of clay minerals with organic species are particularly discussed. The last section is focused on porous clay heterostructures. Each of these processes has been reported in terms of how NIR can assist in the interpretation, evaluation and investigation of new material properties.

      PubDate: 2017-12-11T18:40:21Z
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