Clays and Clay Minerals

Clays and Clay Minerals Encontrados 11 registros  La búsqueda tardó 0.01 segundos. 
1.
7 p, 3.5 MB Preparation and characterization of magnetic composites based on a natural zeolite / GutiéRrez, Marlen (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Escudey, Mauricio (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Escrig, Juan (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Denardin, Juliano C. (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Altbir, Dora (Center for the Development of Nanoscience and Nanotechnology. CEDENNA) ; Fabris, Jose D. (Universidade Federal de Minas Gerais. Departmento de Química) ; Cavalcante, Luis C.D. (Universidade Federal de Minas Gerais. Departmento de Química) ; García-GonzáLez, María Teresa (Consejo Superior de Investigaciones Científicas. Instituto de Ciencias Agrarias)
A magnetic composite was prepared by wet-impregnating a powder of a natural zeolite with a magnetic Fe oxide-containing synthetic material. Both starting materials were first characterized with X-ray diffraction, scanning electron microscopy, Mössbauer spectroscopy, and by isoelectric-point using vibrating-sample magnetometry. [...]
2010 - 10.1346/CCMN.2010.0580501
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 589-595  
2.
10 p, 1.1 MB Synthesis and characterization of Zn-Al layered double hydroxides intercalated with 1- to 19-carbon carboxylic acid anions / Kuehn, Thomas (Martin Luther University Halle-Wittenberg) ; Poellmann, Herbert (Martin Luther University Halle-Wittenberg)
Layered double hydroxides (LDHs) are layered ion exchangers, with a large surface-charge density, which react easily with organic anions. Various types of organics are rapidly substituted in the interlayer space of inorganic precursor LDHs. [...]
2010 - 10.1346/CCMN.2010.0580502
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 596-605  
3.
21 p, 3.7 MB Saponite-rich black shales and nontronite beds of the Permian Irati Formation : Sediment sources and thermal metamorphism (Paraná Basin, Brazil) / Dos Anjos, Camila Wense Dias (Universidade de Brasília. Instituto de Geociências) ; Meunier, Alain (Université de Poitiers) ; Guimarães, Edi Mendes (Universidade de Brasília. Instituto de Geociências) ; El Albani, Abderrazzak (Université de Poitiers)
Shales and claystones in the Permian Irati Formation consist of Al-rich or Fe-Mg clay minerals in its southern/central and northern parts, respectively. The constrasting compositions indicate particular geological and paleo-environmental conditions. [...]
2010 - 10.1346/CCMN.2010.0580503
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 606-626  
4.
17 p, 2.0 MB Element distribution between coexisting authigenic mineral phases in argillic and zeolitic altered tephra, Olduvai Gorge, Tanzania / Mchenry, Lindsay.J. (University of Wisconsin-Milwaukee. Department of Geosciences)
The current study demonstrates how co-existing zeolite and clay minerals formed by the alteration of tephra in a closed-basin lacustrine and lake-margin environment can retain the overall composition of the original bulk tephra for many elements, even when diagenetic conditions and resulting authigenic mineral assemblages change. [...]
2010 - 10.1346/CCMN.2010.0580504
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 627-643  
5.
23 p, 3.4 MB Geochemistry of mixed-layer illite-smectites from an extensional basin, Antalya Unit, Southwestern Turkey / Bozkaya, Ömer (Cumhuriyet University. Department of Geological Engineering) ; Yalçin, Hüseyin (Cumhuriyet University. Department of Geological Engineering)
The Antalya Unit, one of the allochthonous units of the Tauride belt, is of critical, regional tectonic importance because of the presence of rifting remnants related to the break-up of the northern margin of Gondwana during Triassic time. [...]
2010 - 10.1346/CCMN.2010.0580505
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 644-666  
6.
15 p, 2.0 MB Effect of a thermal gradient on iron-clay interactions / Jodin-Caumon, Marie-Camille (Nancy-Université) ; Mosser-Ruck, Regine (Nancy-Université) ; Rousset, Davy (Nancy-Université) ; Randi, Aurelien (Nancy-Université) ; Cathelineau, Michel (Nancy-Université) ; Michau, Nicolas (Agence Nationale pour la Gestion des Déchets Radioactifs (ANDRA))
Disposal facilities in deep geological formations are considered to be a possible solution for long-term management of high-level nuclear waste (HLW). The design of the repository generally consists of a multiple-barrier system including Fe-based canisters and a clay backfill material. [...]
2010 - 10.1346/CCMN.2010.0580506
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 667-681  
7.
9 p, 1.0 MB Reductive activity of adsorbed Fe(II) on iron (oxyhydr)oxides for 2-nitrophenol transformation / Tao, Liang (Chinese Academy of Sciences. Guangzhou Institute of Geochemistry) ; Li, Fangbai (Guangdong Institute of Eco-Environmental and Soil Sciences. Guangdong Key Laboratory of Agricultural Environment Pollution Integrated Control) ; Wang, Yongkui (Chinese Academy of Sciences. Guangzhou Institute of Geochemistry) ; Sun, Kewen (Wenzhou Medical College. Institute of Health and Environmental Ecology)
Much attention has been paid to the adsorption of Fe(II) onto mineral surfaces as it is a crucial step in enhancing the reductive activity of Fe(II) species. The present study elucidates the role of Fe(II) adsorbed on Fe (oxyhydr)oxides (γ-FeOOH, α-FeOOH, and α-FeO) for the reductive transformation of 2-nitrophenol (2-NP), using cyclic voltammetry (CV). [...]
2010 - 10.1346/CCMN.2010.0580507
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 682-690  
8.
16 p, 1.5 MB Seasonal variation in the mineralogy of the suspended particulate matter of the lower Changjiang river at Nanjing, China / Mao, Changping (Nanjing University. Department of Earth Sciences.) ; Chen, Jun (Nanjing University. Department of Earth Sciences) ; Yuan, Xuyin (Hohai University. College of Environmental Science and Engineering) ; Yang, Zhongfang (China University of Geosciences. School of Earth Science and Resources) ; Balsam, William (University of Texas at Arlington) ; Ji, Junfeng (Nanjing University. Department of Earth Sciences)
The source and temporal changes of minerals transported by the world's large rivers are important. In particular, clay minerals are important in evaluating the maturity of suspended sediments, weathering intensity, and source area. [...]
2010 - 10.1346/CCMN.2010.0580508
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 691-706  
9.
10 p, 1.3 MB Quantification of allophane from Ecuador / Kaufhold, Stephan (BGR Bundesanstalt für Geowissenschaften und Rohstoffe) ; Ufer, Kristian (Institute of Mineralogy. TU Bergakademie Freiberg) ; Kaufhold, Annette (Martin-Luther-University Halle-Wittenberg. Institute for Soil Sciences and Plant Nutrition) ; Stucki, Joseph W. (University of Illinois. Department of Natural Resources and Environmental Sciences) ; Anastácio, Alexandre S. (University of Illinois. Department of Natural Resources and Environmental Sciences) ; Jahn, Reinhold (Martin-Luther-University Halle-Wittenberg. Institute for Soil Sciences and Plant Nutrition) ; Dohrmann, Reiner (LBEG Landesamt für Bergbau, Energie und Geologie)
Allophane is a very fine-grained clay mineral which is especially common in Andosols. Its importance in soils derives from its large reactive surface area. Owing to its short-range order, allophane cannot be quantified by powder X-ray diffraction (XRD) directly. [...]
2010 - 10.1346/CCMN.2010.0580509
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 707-716  
10.
4 p, 167.2 KB Comment on "the role of H3O+ in the crystal structure of illite" by F. Nieto, M. Melini, and I. Abad / Vidal, Olivier (Université Grenoble) ; Dubacq, Benoît (University of Cambridge. Department of Earth Sciences) ; Lanari, Pierre (Université Grenoble)
The arguments of Nieto et al. (2010) in favor of the incorporation of HO rather than HO in interlayer positions of illite are disputable. Stoichiometric arguments suggest that the excess water in the Silver Hill illite is in the form of HO. [...]
2010 - 10.1346/CCMN.2010.0580510
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 717-720  
11.
3 p, 90.7 KB Reply to the comment by Vidal, Dubacq, and Lanari on "The role of H3O+ in the crystal structure of illite" / Nieto, Fernando (Universidad de Granada. CSIC. Departamento de Mineralogía y Petrología and IACT) ; Mellini, Marcello (Università di Siena. Dipartimento di Scienze della Terra) ; Abad, Isabel (Universidad de Jaén. Departamento de Geología)
The arguments of Vidal et al. (2010) against the incorporation of HO rather than of HO in the interlayer position of illite are disputable. Stoichiometric arguments do indeed suggest that the excess water in the Silver Hill illite is in the formof HO. [...]
2010 - 10.1346/CCMN.2010.0580511
Clays and Clay Minerals, Vol. 58, Núm. 5 (2010) , p. 721-723  

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