Results 231 to 240 of about 76,988 (260)

Insight into thiabendazole interaction with montmorillonite and organically modified montmorillonites

Applied Clay Science, 2017
Fil: Gamba, Martina. Provincia de Buenos Aires. Gobernacion. Comision de Investigaciones Cientificas. Centro de Tecnologia de Recursos Minerales y Ceramica. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - La Plata. Centro de Tecnologia de Recursos Minerales y Ceramica; Argentina.
Gamba, Martina, Kovář, Petr, Pospíšil, Miroslav, Torres Sanchez, Rosa Maria   +3 more
openaire   +2 more sources

From used montmorillonite to carbon monolayer–montmorillonite nanocomposites

Applied Clay Science, 2014
Abstract Summary background Montmorillonite (Mt) as a low-cost and high-efficient adsorbent for cationic dyes has a promising application in dye wastewater treatment. However, proper disposal of the used Mt is critical to its application. Objective In this work, the used Mt after the adsorption of crystal violet (CV) was calcined under the ...
Qingze Chen, Runliang Zhu, Weixian Deng, Ying Xu, Jianxi Zhu, Qi Tao, Hongping He   +6 more
openaire   +1 more source

Montmorillonite and vanadia—montmorillonite catalysts for aniline alkylation

Journal of Molecular Catalysis, 1994
Abstract An efficient aniline alkylating property of montmorillonite and vanadia-montmorillonite is discussed in the light of acidity.
Sankarasubbier Narayanan, Kiranmayi Deshpande, Boppana P. Prasad   +2 more
openaire   +1 more source

Biodegradable Polylactide/Montmorillonite Nanocomposites

Journal of Nanoscience and Nanotechnology, 2003
Our continuing research on the preparation, characterization, materials properties, and biodegradability of polylactide (PLA)/organically modified layered silicate (OMLS) nanocomposites has yielded results on PLA/montmorillonite nanocomposites. Montmorillonite (mmt) modified with dimethyldioctadecylammonium cation was used as an OMLS for nanocomposite ...
Suprakas Sinha, Ray, Kazunobu, Yamada, Masami, Okamoto, Kazue, Ueda   +3 more
openaire   +2 more sources

Electronically conducting montmorillonite-Cu2S and montmorillonite-Cu2S-polypyrrole nanocomposites

Electrochimica Acta, 2007
Abstract 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, H.M.N. Bandara, R.M.G. Rajapakse   +2 more
openaire   +1 more source

DIMEPIPERATE ADSORPTION AND HYDROLYSIS ON AL3+-MONTMORILLONITE, FE3+-MONTMORILLONITE, CA2+-MONTMORILLONITE, AND NA+-MONTMORILLONITE

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.
openaire   +1 more source

Acid-base chemistry of montmorillonitic and beidellitic-montmorillonitic smectite

Russian Journal of Electrochemistry, 2007
Suspension 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
openaire   +1 more source

Catalysis by montmorillonites

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
openaire   +1 more source

Montmorillonite: Electron-Optical Observations

Science, 1973
Fine-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.
openaire   +2 more sources

Interstratification in Montmorillonite

Clays and clay minerals (National Conference on Clays and Clay Minerals), 1964
Abstract 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
openaire   +1 more source