Results 251 to 260 of about 96,010 (276)
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Electronically conducting montmorillonite-Cu2S and montmorillonite-Cu2S-polypyrrole nanocomposites
Electrochimica Acta, 2007Abstract By making use of cation-exchange approach, montmorillonite-Cu 2 S (MMT-Cu 2 S) nanocomposite was prepared and characterized. Its conductivity was found to be 3.03 × 10 −4 S m −1 . Pyrrole was introduced to MMT-Cu 2 S and polymerized within the interlayer to obtain MMT-Cu 2 S-polypyrrole (MMT-Cu 2 S-PPY) nanocomposite.
A.U. Ranaweera +2 more
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1993
The adsorption of the herbicide dimepiperate S-(alpha,alpha-dimethylbenzyl)-1-piperidinecarbothioate on homoionic Fe3+-, Al3+-, Ca2+-, and Na+-montmorillonite was studied in aqueous medium. The adsorption is described well by the Freundlich equation. The adsorption capacity decreases in the order Fe3+ > Al3+ > Ca2+ > Na+ clay.
PUSINO, Alba, LIU W, GESSA C.
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The adsorption of the herbicide dimepiperate S-(alpha,alpha-dimethylbenzyl)-1-piperidinecarbothioate on homoionic Fe3+-, Al3+-, Ca2+-, and Na+-montmorillonite was studied in aqueous medium. The adsorption is described well by the Freundlich equation. The adsorption capacity decreases in the order Fe3+ > Al3+ > Ca2+ > Na+ clay.
PUSINO, Alba, LIU W, GESSA C.
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Acid-base chemistry of montmorillonitic and beidellitic-montmorillonitic smectite
Russian Journal of Electrochemistry, 2007Suspension of a Tunisian purified smectite and American montmorillonite are studied by acid-base potentiometric and mass titrations. These experimental methods are used to determine the point of zero net proton charge (PZNPC). A very good agreement is observed between the two kinds of experiments.
A. Kriaa, N. Hamdi, E. Srasra
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Clay Minerals, 1983
AbstractA preliminary set of ‘rules’ for acid-catalysis by ion-exchanged montmorillonites has been derived from the reaction of alkenes, alcohols and alicyclic acids over such catalysts. It has been shown that: 1. Cr(III) and Fe(III) are the most active interlayer cations.
J. M. Adams, T. V. Clapp, D. E. Clement
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AbstractA preliminary set of ‘rules’ for acid-catalysis by ion-exchanged montmorillonites has been derived from the reaction of alkenes, alcohols and alicyclic acids over such catalysts. It has been shown that: 1. Cr(III) and Fe(III) are the most active interlayer cations.
J. M. Adams, T. V. Clapp, D. E. Clement
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Montmorillonite: Electron-Optical Observations
Science, 1973Fine-grained micas are consistent impurities in Camp-Berteaux (Morocco) and Wyoming montmorillonites. These micas give selected-area electron diffraction spot patterns with triclinic, monoclinic, and hexagonal symmetries similar to those reported previously for montmorillonites.
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Interstratification in Montmorillonite
Clays and clay minerals (National Conference on Clays and Clay Minerals), 1964Abstract Direct analysis by Fourier transform methods revealed interstratification of three components for a homogeneous, potassium-treated and organic-solvated montmorillon-ite. An initial simple interpretation based on random mixing of two components was shown
Rodney Tettenhorst, W. D. Johns
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