Results 121 to 130 of about 334 (140)
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Study of the Removal of Mercury(II) and Chromium(VI) From Aqueous Solutions by Moroccan Stevensite
Journal of Hazardous Materials, 2005The objective of the present study was to investigate the adsorption of the heavy metals mercury(II) and chromium(VI), from aqueous solutions, onto Moroccan stevensite. A mineralogical and physicochemical characterization of natural stevensite was carried out.
A Benhammou
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Stevensite oolites from the Green River Formation of central Utah
Journal of Sedimentary Research, 1978Abstract The Green River Formation (Eocene) in Sanpete Valley, central Utah, contains many thin beds of shiny brown oolites in a very sparse to abundant matrix of calcite and minor quartz. Analytical techniques revealed that the oolites are composed primarily of the smectite stevensite.
R. Tettenhorst, G. E. Moore
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Mixed-Layer Kerolite/Stevensite from the Amargosa Desert, Nevada
Clays and Clay Minerals, 1982AbstractMixed-layer clays composed of randomly interstratified kerolite/stevensite occur as lake and/or spring deposits of probable Pliocene and Pleistocene age in the Amargosa Desert of southern Nevada, U.S.A. The percentage of expandable layers of these clays, determined from computer-simulated X-ray diffractograms, ranges from almost 0 to about 80%.
Dennis D. Eberl +2 more
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Stevensite from the Whin Sill in the Region of the North Tyne
Mineralogical Magazine and Journal of the Mineralogical Society, 1959SummaryA stevensite occurring as an alteration product of pectolite in amygdale-like structures within the Whin Sill is described. Data given for the stevensite include optical properties, stain reactions, chemical analysis, X-ray powder data, and D.T.A. curves.
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Journal of Nanoscience and Nanotechnology, 2019
Regularly arranged chains strongly affect the electrical conductivity of conductive polymers (e.g., polypyrrole). One of the easiest ways to achieve this arrangement is the insertion of the polymer into the interlayer space of solid inorganic layered matrix, i.e., the intercalation process.
Jonáš, Tokarský +4 more
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Regularly arranged chains strongly affect the electrical conductivity of conductive polymers (e.g., polypyrrole). One of the easiest ways to achieve this arrangement is the insertion of the polymer into the interlayer space of solid inorganic layered matrix, i.e., the intercalation process.
Jonáš, Tokarský +4 more
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Stevensite, a smectite-group mineral from Corstorphine Hill, Edinburgh
Scottish Journal of Geology, 1989Synopsis Specimens of pectolite, from Corstorphine Hill, Edinburgh, were found to be coated by the smectite-group mineral stevensite. This is the first recorded occurrence of stevensite in Scotland, although the specimen was registered (as pectolite) in 1898.
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Kerolite-stevensite mixed-layers from the Madrid Basin, Central Spain
Clay Minerals, 1991AbstractStructural features of very highly disordered 2:1 trioctahedral phyllosilicates from the Madrid Basin have been studied. Application of Fourier methods to XRD patterns shows that these materials consist of random kerolite-stevensite mixed-layered phases (R = 0) with 50–80% kerolite layers, and have a very small particle size with a mean of ...
J. L. Martin de Vidales +4 more
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Removal of chloridazon from water by kerolite/stevensite and bentonite: a comparative study
Journal of Chemical Technology & Biotechnology, 2000The adsorption of chloridazon (5-amino-4-chloro-2-phenylpyridazin-3(2H)-one) on a new type of material formed by kerolite/stevensite bearing lithofacies and on a bentonite, desiccated at 110 °C from aqueous solution at 25 °C has been studied by using batch experiments.
E Gonz�lez-Pradas +4 more
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