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Dimepiperate adsorption and hydrolysis on Al (super 3+) -, Fe (super 3+) -, Ca (super 2+) -, and Na (super +) -montmorillonite

A. Pusino, W. Liu and C. Gessa
Dimepiperate adsorption and hydrolysis on Al (super 3+) -, Fe (super 3+) -, Ca (super 2+) -, and Na (super +) -montmorillonite
Clays and Clay Minerals (June 1993) 41 (3): 335-340

Abstract

The adsorption of the herbicide dimepiperate S-(alpha ,alpha -dimethylbenzyl)-1-piperidinecarbothioate on homoionic Fe (super 3+) -, Al (super 3+) -, Ca (super 2+) -, and Na (super +) -montmorillonite was studied in aqueous medium. The adsorption is described well by the Freundlich equation. The adsorption capacity decreases in the order Fe (super 3+) > Al (super 3+) > Ca (super 2+) > Na (super +) clay. The dimepiperate adsorption from chloroform solution was also investigated by analytical, spectroscopic, and X-ray powder diffraction techniques. IR results suggest that the adsorption involves the interaction of the thioester carbonyl group of dimepiperate possibly with the surrounding water of metal ions. On Al (super 3+) and Fe (super 3+) clays, this interaction leads to hydrolysis of the thioester bond and formation of the thiol and carbamic acid derivatives that yield alpha -methylstyrene and piperidine, respectively.


ISSN: 0009-8604
Coden: CLCMAB
Serial Title: Clays and Clay Minerals
Serial Volume: 41
Serial Issue: 3
Title: Dimepiperate adsorption and hydrolysis on Al (super 3+) -, Fe (super 3+) -, Ca (super 2+) -, and Na (super +) -montmorillonite
Affiliation: Universita di Reggio Calabria, Istituto di Chimica Agraria e Forestale, Gallina, Italy
Pages: 335-340
Published: 199306
Text Language: English
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 19
Accession Number: 1993-038810
Categories: Geochemistry of rocks, soils, and sedimentsMineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Secondary Affiliation: Zhejiang University, CHN, ChinaUniversita di Bologna, ITA, Italy
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 1993
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