Clays and Clay Minerals

Clays and Clay Minerals Encontrados 16 registros  La búsqueda tardó 0.02 segundos. 
1.
10 p, 947.8 KB A mössbauer spectroscopic study of aluminum- and iron-pillared clay minerals / Aouad, Amina (CNRS-Université d'Orléans CRMD) ; Anastácio, Alexandre S. (University of Illinois. Department of Natural Resources and Environmental Sciences) ; Bergaya, Faïza (CNRS-Université d'Orléans CRMD) ; Stucki, Joseph W. (University of Illinois. Department of Natural Resources and Environmental Sciences)
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 theus eof Fe offers a distinct opportunity to expand therangeof catalytic behavior. [...]
2010 - 10.1346/CCMN.2010.0580203
Clays and Clay Minerals, Vol. 58, Núm. 2 (2010) , p. 164-173  
2.
16 p, 1.2 MB Porosity evolution of free and confined bentonites during interlayer hydration / Likos, William J. (University of Missouri-Columbia. Department of Civil and Environmental Engineering) ; Wayllace, Alexandra (Colorado School of Mines. Engineering Division)
Methods for predicting the volume change and swelling-pressure behavior of expansive clays require detailed understanding of coupled interactions between clay microstructure and macrostructure under hydraulic, thermal, and mechanical loads. [...]
2010 - 10.1346/CCMN.2010.0580310
Clays and Clay Minerals, Vol. 58, Núm. 3 (2010) , p. 399-414  
3.
9 p, 321.3 KB Calorimetric determination of the enthalpies of formation of hydrotalcite-like solids and their use in the geochemical modeling of metals in natural waters / Allada, Rama Kumar (NASA Johnson Space Center) ; Peltier, Edward (University of Delaware. Department of Plant and Soil Sciences) ; Navrotsky, Alexandra (University of California. Department of Chemical Engineering and Materials Science) ; Casey, William H. (University of California. Department of Chemistry) ; Johnson, C. Annette (Swiss Federal Institute of Environmental Science and Technology) ; Berbeco, Hillary Thompson (Franklin W. Olin College of Engineering) ; Sparks, Donald L. (University of Delaware. Department of Plant and Soil Sciences)
Interest in hydrotalcite-like compounds has grown due to their role in controlling the mobility of aqueous metals in the environment as well as their use as catalysts, catalyst precursors and specialty chemicals. [...]
2006 - 10.1346/CCMN.2006.0540401
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 409-417  
4.
8 p, 422.0 KB Controlled polymerization of metanilic anion within the interlayer of NiAl layered double hydroxide / Tian, Xiaofei (Beijing University of Chemical Technology. State Key Laboratory of Chemical Resource Engineering) ; Wei, Min (Beijing University of Chemical Technology. State Key Laboratory of Chemical Resource Engineering) ; Evans, David G. (Beijing University of Chemical Technology. State Key Laboratory of Chemical Resource Engineering) ; Rao, Gouying (Beijing University of Chemical Technology. State Key Laboratory of Chemical Resource Engineering) ; Yang, Heli (Beijing University of Chemical Technology. State Key Laboratory of Chemical Resource Engineering)
The controlled chemical oxidative polymerization of metanilic anion (m-NHCHSO ) within the interlayer of NiAl layered double hydroxide was performed using, for the first time, ammonium persulfate as the oxidizing agent. [...]
2006 - 10.1346/CCMN.2006.0540402
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 418-425  
5.
9 p, 559.7 KB Sorption of nitroaromatics by ammonium- and organic ammonium-exchanged smectite : Shifts from adsorption/complexation to a partition-dominated process / Roberts, Michael G. (Michigan State University. Department of Crop and Soil Sciences) ; Li, Hui (Michigan State University. Department of Crop and Soil Sciences) ; Teppen, Brian J. (Michigan State University. Department of Crop and Soil Sciences) ; Boyd, Setephen A. (Michigan State University. Department of Crop and Soil Sciences)
Nitroaromatic compounds (NACs) are components of munitions commonly found as soil contaminants at military training sites and elsewhere. These compounds pose possible threats to human health and ecological systems. [...]
2006 - 10.1346/CCMN.2006.0540403
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 426-434  
6.
14 p, 598.2 KB Studies on the adsorption of dyes to kaolinite / Harris, Rodney G. (Brewing Research International) ; Johnson, Bruce B. (La Trobe University. Colloid and Environmental Chemistry Laboratory) ; Wells, John D. (La Trobe University. Colloid and Environmental Chemistry Laboratory)
The strong adsorption to kaolinite of four polyaromatic, cationic dyes (9-aminoacridine, 3,6-diaminoacridine, azure A and safranin O), which adsorb much less to alumina or silica, was investigated by means of acid-base titrations, measurements of adsorption at varying pH and dye concentration, and by ATR-FTIR spectroscopy. [...]
2006 - 10.1346/CCMN.2006.0540404
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 435-448  
7.
7 p, 456.7 KB Competitive adsorption of Cd and dyes to kaolinite / Harris, Rodney G. (Brewing Research International) ; Johnson, Bruce B. (La Trobe University. Colloid and Environmental Chemistry Laboratory) ; Wells, John D. (La Trobe University. Colloid and Environmental Chemistry Laboratory)
The competitive adsorption to kaolinite between Cd(II) and four polyaromatic dyes (9-aminoacridine, 3,6-diaminoacridine, azure A and safranin O) was studied in 5 mM KNO at 25°C. Under these conditions, Cd adsorbs to the silica face of kaolinite between about pH 4 and 6. [...]
2006 - 10.1346/CCMN.2006.0540405
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 449-455  
8.
10 p, 567.4 KB Modeling the adsorption of organic dye molecules to kaolinite / Harris, Rodney G. (Brewing Research International) ; Wells, John D. (La Trobe University. Colloid and Environmental Chemistry Laboratory) ; Angove, Michael J. (La Trobe University. Colloid and Environmental Chemistry Laboratory) ; Johnson, Bruce B. (La Trobe University. Colloid and Environmental Chemistry Laboratory)
Simple extended constant capacitance surface complexation models have been developed to represent the adsorption of polyaromatic dyes (9-aminoacridine, 3,6-diaminoacridine, azure A and safranin O) to kaolinite, and the competitive adsorption of the dyes with Cd. [...]
2006 - 10.1346/CCMN.2006.0540406
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 456-465  
9.
7 p, 385.5 KB Redox properties of structural Fe in ferruginous smectite. A discussion of the standard potential and its environmental implications / Favre, Fabienne (Swiss Federal Institute of Technology. Laboratory of Soil Science. LPE-ISTE-ENAC) ; Stucki, Joseph W. (University of Illinois. Department of Natural Resources and Environmental Sciences) ; Boivin, Pascal (Université J. Fourier. IRD. Laboratoire d'Étude des Transferts en Hydrologie et Environnement LTHE)
The aim of this study was to compare the redox properties of oxides and smectite structural Fe (Fes). Structural Fe in smectite often accounts for about half of the Fe pool in soils and sediments, and is naturally reduced by indigenous bacteria. [...]
2006 - 10.1346/CCMN.2006.0540407
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 466-472  
10.
12 p, 504.0 KB Differences in the dehydration-rehydration behavior of halloysites : New evidence and interpretations / Joussein, Emmanuel (CNRS UMR 6532 HydrASA. Faculté des Sciences) ; Petit, Sabine (CNRS UMR 6532 HydrASA. Faculté des Sciences) ; Fialips, Claire-Isabelle (School of Civil Engineering and Geosciences. University of Newcastle upon Tyne) ; Vieillard, Philippe (CNRS UMR 6532 HydrASA. Faculté des Sciences) ; Righi, Dominique (CNRS UMR 6532 HydrASA. Faculté des Sciences)
Two reference halloysites from New Zealand (Te Puke and Opotiki) were studied by X-ray diffraction under (1) various levels of relative humidity (RH) from 95 to 0% (dehydration), and (2) various temperatures increasing from 25 to 120°C (dehydration). [...]
2006 - 10.1346/CCMN.2006.0540408
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 473-484  
11.
6 p, 742.9 KB Preparation of porous carbons from halloysite-sucrose mixtures / Wang, Ai-Ping (Graduate University of the Chinese Academy of Sciences) ; Kang, Feiyu (Tsinghua University. Laboratory of Advanced Materials) ; Huang, Zheng-Hong (Tsinghua University. Laboratory of Advanced Materials) ; Guo, Zancheng (Chinese Academy of Sciences. Institute of Process Engineering)
Porous carbons rich in mesopores and with large pore volumes have been prepared by polymerization and carbonization of a carbon precursor, sucrose, within a matrix of the natural clay, halloysite. The carbon precursor was impregnated into the pores of halloysite and mostly deposited on the external surface of the halloysite rods during impregnation. [...]
2006 - 10.1346/CCMN.2006.0540409
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 485-490  
12.
9 p, 1.2 MB Structural and chemical alteration of glauconite under progressive acid treatment / Hassan, Mervat S. (Central Metallurgical R and D Institute) ; Baioumy, Hassan M. (Central Metallurgical R and D Institute)
Boiling glauconite from the El-Gideda area of Egypt in different concentrations of HCl and HSO for different periods led to a modified structure. Treatment resulted in progressive destruction of the structure, leaving X-ray amorphous silica and only relics of the original mineral. [...]
2006 - 10.1346/CCMN.2006.0540410
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 491-499  
13.
15 p, 1.0 MB Influence of mechanical compaction and clay mineral diagenesis on the microfabric and pore-scale properties of deep-water Gulf of Mexico mudstones / Aplin, Andrew C. (Newcastle University. School of Civil Engineering and Geosciences) ; Matenaar, Ingo F. (ExxonMobil Exploration Company) ; McCarty, Douglas K. (Chevron ETC) ; van der Pluijm, Ben A. (University of Michigan. Department of Geological Sciences)
We report on how the effects of mechanical compaction and clay mineral diagenesis have affected the alignment of phyllosilicates in a suite of Miocene-Pliocene mudstones buried to sub-seabed depths of between 1. [...]
2006 - 10.1346/CCMN.2006.0540411
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 500-514  
14.
28 p, 2.3 MB Rietveld refinement of disordered illite-smectite mixed-layer structures by a recursive algorithm. I : One-dimensional patterns / Ufer, Kristian (BGR/LBEG) ; Kleeberg, Reinhard (Institute of Mineralogy. TU Bergakademie Freiberg) ; Bergmann, Jörg ; Dohrmann, Reiner (BGR/LBEG)
X-ray diffraction patterns of oriented mounts of clay minerals are often used in clay mineralogy for qualitative and quantitative purposes. Fequently occurring stacking defects, in particular, can be characterized by this technique. [...]
2012 - 10.1346/CCMN.2012.0600507
Clays and Clay Minerals, Vol. 60, Núm. 5 (2012) , p. 507-534  
15.
14 p, 467.6 KB Pore-scale analysis of bulk volume change from crystalline interlayer swelling in Na+- and Ca2+-smectite / Likos, William J. (University of Missouri-Columbia. Department of Civil and Environmental Engineering) ; Lu, Ning (Colorado School of Mines. Engineering Division)
Water-vapor sorption experiments were conducted to quantify bulk volume change of compacted expansive clay specimens resulting from interlayer hydration and dehydration in the crystalline swelling regime. [...]
2006 - 10.1346/CCMN.2006.0540412
Clays and Clay Minerals, Vol. 54, Núm. 4 (2006) , p. 515-528  
16.
Changes in structure, morphology, porosity, and surface activity of mesoporous halloysite nanotubes under heating / Yuan, Peng (Chinese Academy of Sciences. CAS Key Laboratory of Mineralogy and Metallogeny) ; Tan, Daoyong (Graduate School of the Chinese Academy of Science) ; Annabi-Bergaya, Faïza (Centre National de la Recherche Scientifique (França)) ; Yan, Wenchang (Graduate School of the Chinese Academy of Science) ; Fan, Mingde (Inner Mongolia University. College of Environment and Resources) ; Liu, Dong (Chinese Academy of Sciences. CAS Key Laboratory of Mineralogy and Metallogeny) ; He, Hongping (Chinese Academy of Sciences. CAS Key Laboratory of Mineralogy and Metallogeny)
The objective of the present study was to investigate changes in the structural, textural, and surface properties of tubular halloysite under heating, which are significant in the applications of halloysite as functional materials but have received scant attention in comparison with kaolinite. [...]
2013 - 10.1346/CCMN.2012.0600602
Respiratory Care, Vol. 60, Núm. 6 (2012) , p. 561-573  

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