Browsing by Title

Browsing by Title

Sort by: Order: Results:

  • Garcia-romero, E.; Suarez, M. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Many studies of the chemical composition of sepiolite and palygorskite have been carried out using analytical electron microscopy (AEM). According to the literature, a compositional gap exists between sepiolites and ...
  • Cruz, Maria Dolores Ruiz; Ruiz, Maria Dolores Rodriguez; De Galdeano, Carlos Sanz (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The purpose of this study was to investigate the structural and chemical modifications of phyllosilicates that occur under natural conditions, using the progressive deformation of chlorite (sudoite) present in quartz-rich ...
  • Kaufhold, S.; Dohrmann, R.; Klinkenberg, M. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The present study compares the water-vapor adsorption capacity of bentonites (natural cation population) with the Enslin-Neff method. Water-vapor adsorption at 50% r.h. (relative humidity) or 70% r.h. is known to depend ...
  • Ryu, Kyoung-won; Jang, Young-nam; Chae, Soo-chun (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    In spite of many studies of kaolinite synthesis, questions remain as to the transformation of gel into kaolinite, the kinetics of the reaction, and the influence of solution chemistry. The purpose of the present study was ...
  • Smrcok, L’ubomir; Tunega, Daniel; Ramirez-cuesta, Anibal Javier; Ivanov, Alexander; Valuchova, Jana (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Vibrational spectra of two kaolinite-dimethylsulfoxide intercalates, obtained using inelastic neutron scattering (INS), were analyzed with a view to understanding the dynamics of the hydrogen atoms in the structure. The ...
  • Kogure, Toshihiro; Elzea-kogel, Jessica; Johnston, Cliff T.; Bish, David L. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Although structural disorder in kaolinite has been investigated extensively, it is still not understood properly. To investigate the problem, a kaolinite specimen of sedimentary origin from Capim, Brazil, was examined, ...
  • Gu, Zheng; Song, Guojun; Liu, Weisheng; Yang, Shujing; Gao, Jianming (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The aim of the work was to study the effect of organo-montmorillonite (OMt) on the properties of hydrogenated nitrile rubber (HNBR)/OMt nanocomposites. The nanocomposites were prepared by a melt intercalation method. The ...
  • Dohrmann, Reiner; Kaufhold, Stephan (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The aim of the present study was to find methodological tools to obtain reasonable results for exchangable Ca2+ of gypsiferous bentonites. Cation exchange capacity (CEC) is an important property of clays. Numerous methods ...
  • Liu, Xiandong; Meijer, Evert Jan; Lu, Xiancai; Wang, Rucheng (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    In order to identify the influences imposed by Fe substitution, density functional theory-based Car-Parrinello molecular dynamics simulations were employed to study both oxidized and reduced Febearing smectites. The following ...
  • Campos, Ana M.; Moreno, Sonia; Molina, Rafael (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Vermiculites have the potential to serve as effective catalysts if pillared with Al, but their high charge presents an obstacle to the pillaring process. The purpose of this studywas to submit natural vermiculite to thermal ...
  • Boudriche, L.; Hamdi, B.; Kessaissia, Z.; Calvet, R.; Chamayou, A.; Dodds, J. A.; Balard, H. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Themost common means of reducing theparticlesizeof solids is by grinding, a process which can affect the surface properties and the behavior of the solid in later stages (granulation, compaction, etc.), and which can ...
  • Chang, Hao-wei; Krishna, Paramesamangalam Gopi; Chien, Shao Chi; Ou, Chang Yu; Wang, Ming Kuang (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Electro-osmotic chemical treatment is an innovative method to improve the strength of soft clays for geotechnical engineering purposes; the effectiveness of the treatment may be related to treatment time, the concentration ...
  • Aouad, Amina; Anastacio, Alexandre S.; Bergaya, Faiza; Stucki, Joseph W. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The placement of metal oxide pillars between clay mineral layers modifies their physicalchemical properties, including surface area, acidity, and catalytic activity. Aluminum is the most commonly used pillar cation, but ...
  • Berghout, Abid; Tunega, Daniel; Zaoui, Ali (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Theoretical models of the mechanical properties of hydrated smectites, saturated with a variety of cations, are of much value in determining the potential for their use in various applications, including clay-polymer ...
  • Trindade, Maria Jose; Dias, Maria Isabel; Coroado, Joao; Rocha, Fernando (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    In cases where the provenance of raw materials used in the manufacture of local archeological ceramics is of interest, a detailed study of thermal transformations of minerals may be useful. The purpose of this study was ...
  • Kadir, Selahattin; Eren, Muhsin; Atabey, Esref (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The origins of dolocrete and associated palygorskite in the C¸ anakkale region of Turkey have been little studied, but are of fundamental importance for a more complete understanding of the mineralogy of this region. The ...
  • Churchman, Gordon Jock; Pontifex, Ian Russell; Mcclure, Stuart Gerrand (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The occurrenceof halloysite and/or kaolinitein clay-rich, vein-likezone s in saprolites in Hong Kong has provided theopportunit y to examinetheconditions determining theformation of onekaolin mineral or the other and also ...
  • Nieto, Fernando; Mellini, Marcello; Abad, Isabel (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    In spite of decades of research on the subject, the crystal structure of illite is still poorly understood. The purpose of this study was to address this problem by investigating the nature of the interlayer content in ...
  • Chittamart, Natthapol; Suddhiprakarn, Anchalee; Kheoruenromne, Irb; Gilkes, Robert J. (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    The fertility of soils with respect to K+ and NH4 + is often difficult to measure, but is essential for achieving effective agronomic practices. This problem is especially important in the Vertisols of Thailand. The purpose ...
  • Diaz, Magali; Robert, Jean-louis; Schroeder, Paul A.; Prost, Rene (The Clay Minerals SocietyThe Clay Minerals Society, 2010)
    Far-infrared (FIR) analysis of synthetic Mg-, Ni-, Co-, and Fe-phlogopites coupled with structural data from X-ray diffraction revealed that the K interlayer environments are directly related to octahedral sheet composition ...