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Synthesis and characterization of saponite clays
American Mineralogist, 2005A new procedure has been developed for fast preparation of saponite clays under non-hydrothermal synthesis conditions of 90 °C and 1 atmosphere. Saponites were synthesized from a stoichiometric mixture containing Si/Al gel, M-nitrate (M = Mg, Zn, Ni, Co, or Cu), urea, and water within a few hours. The synthesis products were characterized with XRD, IR,
Vogels, R. J.M.J. +2 more
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Clay Minerals, 1994
AbstractThe clay deposits in fractures of the metamorphic basement under the Paris Basin sedimentary formations at Sancerre-Couy (France) are composed of trioctahedral species which are exceptionally well crystallized. Three samples were chosen in order to study the chemical composition of 100% expandable saponite, 50% expandable corrensite and 10 ...
D. Beaufort, A. Meunier
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AbstractThe clay deposits in fractures of the metamorphic basement under the Paris Basin sedimentary formations at Sancerre-Couy (France) are composed of trioctahedral species which are exceptionally well crystallized. Three samples were chosen in order to study the chemical composition of 100% expandable saponite, 50% expandable corrensite and 10 ...
D. Beaufort, A. Meunier
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Triazine adsorption by saponite and beidellite clay minerals
Environmental Toxicology and Chemistry, 2006Abstract We investigated the sorption of three triazine herbicides (atrazine, simazine, and metribuzin) by saponite and beidellite clay minerals saturated with K+, Cs+, Na+, and Ca2+. Saponite clay sorbed a larger fraction of each pesticide from aqueous solution than did beidellite clay.
Vaneet, Aggarwal +2 more
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Saponite, thalite, greenalite, greenstone
Geological Society of America Bulletin, 1912Saponite A soft, soapy earth, varying in color from nearly white to greenish and bluish colors, has been known for more than a hundred and fifty years. It has been called soapstone and porcellanous earth. It was found to fill cavities in rocks, and especially in those rocks that contain little or no potassium, such as basic trap rocks.
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Hydrothermal Synthesis and Characterization of Cu-Saponite
Advanced Materials Research, 2013Hydrothermal synthesis of Cu-saponite was achieved using copper nitrate and sodium silicate as the raw materials. The mixtures of starting materials were treated under hydrothermal conditions at 60–230°C for 6–48h. The effect of different synthetic parameters such as hydrothermal temperature and hydrothermal time on the structure development of Cu ...
Xian Mei Xie +4 more
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Journal of Materials Science, 1988
Five saponites with various substitution degrees of the constituent OH by fluorine were subjected to complex formation with α-naphthylamine to examine the effect of substitution on the stabilities of the resulting complexes. Saponite with a larger substitution degree intercalated a lesser quantity of a-naphthylamine and was broken down more easily in ...
H. Sugiyama, A. Ōya, S. Ōtani
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Five saponites with various substitution degrees of the constituent OH by fluorine were subjected to complex formation with α-naphthylamine to examine the effect of substitution on the stabilities of the resulting complexes. Saponite with a larger substitution degree intercalated a lesser quantity of a-naphthylamine and was broken down more easily in ...
H. Sugiyama, A. Ōya, S. Ōtani
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Pillaring of saponite in concentrated medium
Clay Minerals, 1992R. A. Schoonheydt, H. Leeman
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