Clays and Clay Minerals

Clays and Clay Minerals Encontrados 11 registros  La búsqueda tardó 0.01 segundos. 
1.
2 p, 98.8 KB 'Measurement of clay surface areas by polyvinylpyrrolidone (PVP) sorption : A new method for quantifying illite and smectite abundance' / Blum, Alex (USGS) ; Lee, Lopaka (USGS) ; Eberl, Dennis (USGS)
2011 - 10.1346/CCMN.2011.0590209
Clays and Clay Minerals, Vol. 59, Núm. 2 (2011) , p. 212-213  
2.
11 p, 1.2 MB Mineralogical, chemical, and physical characterization of synthetic al-substituted maghemites (γ-fe2-xalxo3) / Batista, Marcelo A. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia) ; da Costa, Antonio C.S. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia) ; Bigham, Jerry M. (The Ohio State University. School of Environment and Natural Resources) ; de Santana, Henrique (Universidade Estadual de Londrina. UEL, Departamento de Quemica) ; Zaia, Dimas A.M. (Universidade Estadual de Londrina. UEL, Departamento de Quemica) ; de Souza Junior, Ivan G. (Universidade Estadual de Maringá. UEM, Departamento de Agronomia)
Maghemite (γ-FeO) is a ferrimagnetic Fe oxide commonly found in tropical and subtropical soils, especially in the topsoil where it is usually a product of burning. Isomorphic substitution (IS) of the Fe in maghemite by different metals (mainly Al) can modify its mineralogical and chemical attributes, and these modifications may be important to understanding the formation and properties of this mineral in soils and sediments. [...]
2010 - 10.1346/CCMN.2010.0580401
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 451-461  
3.
13 p, 1.4 MB FTIR and XRD investigations of tetracycline intercalation in smectites / Li, Zhaohui (China University of Geosciences. Faculty of Earth Sciences) ; Kolb, Vera M.K. (University of Wisconsin Parkside. Chemistry Department) ; Jiang, Wei-Teh (National Cheng Kung University. Department of Earth Sciences) ; Hong, Hanlie (China University of Geosciences. Faculty of Earth Sciences)
Due to swelling, smectite minerals are capable of intercalating many organic molecules in their interlayer space. Tetracycline (TC) is a group of antibiotics used extensively in human and veterinary medicine. [...]
2010 - 10.1346/CCMN.2010.0580402
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 462-474  
4.
11 p, 840.3 KB Glycerol-intercalated Mg-Al hydrotalcite as a potential solid base catalyst for transesterification / Xi, Yuanzhou (University of Virginia. Department of Chemical Engineering) ; Davis, Robert J. (University of Virginia. Department of Chemical Engineering)
Glycerol is a byproduct of biodiesel synthesis by transesterification of triglycerides with short- chain alcohols in the presence of solid base catalysts. Because hydrotalcite is a potentially useful basic catalyst for the transesterification reaction, the interaction of glycerol with hydrotalcite is the focus of this work. [...]
2010 - 10.1346/CCMN.2010.0580403
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 475-485  
5.
15 p, 1.1 MB Modeling of the thermohydrodynamic and reactive behavior of compacted clay for high-level radionuclide waste-management systems / Juncosa, Ricardo (Universidade da Coruña) ; Navarro, Vicente (Universidad de Castilla-La Mancha) ; Delgado, Jordi (Universidade da Coruña) ; Vázquez, Ana (Universidade da Coruña)
Bentonite is often proposed as an engineered-buffer material in high-level radionuclide waste- management systems. For effective design of the barrier that will provide protection over the long time periods required, the physical/thermal/chemical processes taking place in the barrier material must be understood thoroughly. [...]
2010 - 10.1346/CCMN.2010.0580404
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 486-500  
6.
14 p, 1.4 MB Hydrothermal stability of layered silicates in neutral and acidic media : Effect on engineered-barrier safety / Alba, María D. (CSIC-Universidad de Sevilla. Departamento de QuímicaInorgánica. Instituto Ciencia de los Materiales de Sevilla) ; Castro, Miguel A. (CSIC-Universidad de Sevilla. Departamento de QuímicaInorgánica. Instituto Ciencia de los Materiales de Sevilla) ; Chain, Pablo (CSIC-Universidad de Sevilla. Departamento de QuímicaInorgánica. Instituto Ciencia de los Materiales de Sevilla) ; Orta, M. Mar (CSIC-Universidad de Sevilla. Departamento de QuímicaInorgánica. Instituto Ciencia de los Materiales de Sevilla) ; Pazos, M. Carolina (Universidad Nacional de Colombia. Laboratorio de Catálisis Heterogénea. Departamento de Química) ; Pavón, Esperanza (CSIC-Universidad de Sevilla. Departamento de QuímicaInorgánica. Instituto Ciencia de los Materiales de Sevilla)
Many environmental applications in the inorganic remediation field are based on the swelling and ion-exchange capacities of smectites, even though these can be affected by hydrothermal treatment in water and acidic media. [...]
2010 - 10.1346/CCMN.2010.0580405
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 501-514  
7.
7 p, 785.9 KB Removal of Fe from kaolin using dissimilatory Fe(III)-reducing bacteria / Guo, Min-Rong (Fujian Normal University. School of Chemistry and Materials Science) ; He, Qiu-Xiang (Fujian Normal University. School of Chemistry and Materials Science) ; Li, Yu-Man (Fujian Normal University. School of Chemistry and Materials Science) ; Lu, Xiao-Qiao (Fujian Normal University. School of Chemistry and Materials Science) ; Chen, Zu-Liang (Fujian Normal University. School of Chemistry and Materials Science)
LongYan kaolin has a large Fe content which affects the coloring. Bioleaching treatments to remove Fe impurities were conducted here using indigenous dissimilatory Fe(III)-reducing bacteria. The factors that affect bioleaching efficiency include bioleaching time, carbon source, pH, temperature, pulp density, and inoculum density and these were examined. [...]
2010 - 10.1346/CCMN.2010.0580406
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 515-521  
8.
10 p, 1.8 MB Structural change in celadonite and cis-vacant illite by electron radiation in TEM / Kogure, Toshihiro (The University of Tokyo. Department of Earth and Planetary Science. Graduate School of Science) ; Drits, Victor A. (Geological Institute of the Russian Academy of Sciences)
High-resolution transmission electron microscopy (HRTEM) images of two dioctahedral micas, celadonite and cis-vacant (cv) illite, were examined in detail to understand the effects of electron radiation on their structures during image acquisition. [...]
2010 - 10.1346/CCMN.2010.0580407
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 522-531  
9.
10 p, 676.8 KB Colloid diffusion in compacted bentonite:Microstructural constraints / Holmboe, Michael (Royal Institute of Technology. KTH School of Chemical Science and Engineering) ; Wold, Susanna (Royal Institute of Technology. KTH School of Chemical Science and Engineering) ; Jonsson, Mats (Royal Institute of Technology. KTH School of Chemical Science and Engineering)
In Sweden and in many other countries, a bentonite barrier will be used in the repository for spent nuclear fuel. In the event of canister failure, colloidal diffusion is a potential, but scarcely studied mechanism of radionuclide migration through the bentonite barrier. [...]
2010 - 10.1346/CCMN.2010.0580408
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 532-541  
10.
15 p, 3.6 MB Factors controlling the evolution of mineral assemblages and illite crystallinity in paleozoic to triassic sequences from the transition between maláguide and alpujárride complexes (betic cordillera, Spain) : The significance of tobelite / Ruiz Cruz, M.D. (Universidad de Málaga. Departamento de Química Inorgánica) ; Sanz de Galdeano, C. (CSIC-Universidad de Granada. Instituto Andaluz de Ciencias de la Tierra)
The Hercynian metamorphic event is poorly characterized in internal zone complexes of the Betic Cordillera (Spain), as it has been, to a great extent, overprinted by the mineral assemblages formed during the Alpine event. [...]
2010 - 10.1346/CCMN.2010.0580410
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 558-572  
11.
12 p, 2.3 MB Origin and depositional environment of palygorskite and sepiolite from the ypresian phosphatic series, Southwestern Tunisia / Tlili, A. (Route de Soukra. Earth Sciences Department) ; Felhi, M. (Route de Soukra. Earth Sciences Department) ; Montacer, M. (Route de Soukra. Earth Sciences Department)
The Ypresianphosphatic series of the Gafsa-Metlaoui basin, southwesternTun isia, is represented by an alternation of phosphatic levels and interbedded facies, which are composed of marly-clay and silica-rich rocks. [...]
2010 - 10.1346/CCMN.2010.0580411
Clays and Clay Minerals, Vol. 58, Núm. 4 (2010) , p. 573-584  

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