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Mechanisms of interaction between montmorillonite and 3-aminotriazole

Published online by Cambridge University Press:  09 July 2018

E. Morillo
Affiliation:
Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, Aptdo. 1052, 41080 Sevilla, Spain
J. L. Pérez-Rodríguez
Affiliation:
Instituto de Ciencia de Materiales, CSIC, Sevilla, Aptdo. 1052, 41080 Sevilla, Spain
C. Maqueda
Affiliation:
Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, Aptdo. 1052, 41080 Sevilla, Spain

Abstract

The adsorption of aminotriazole, at its solution pH, with montmorillonite saturated with different cations has been studied. A pesticide-montmorillonite complex is formed through interlamellar cations which are not displaced. Aminotriazole is situated mostly as a polarized molecule around Mg2+ and Zn2+ cations, removing a great amount of water. In Na+- and Li+-montmorillonite, the pesticide remains as a non-polarized molecule, hydration water being retained in the interlamellar space; the pesticide is coordinated to interlamellar cations through water bridges. For all samples a proportion of cationic aminotriazole is also adsorbed, the amount being greater with increasing polarizing power of the interlamellar cation; consequently, in Fe3+-montmorillonite all the aminotriazole adsorbed is in the cationic form.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1991

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References

Bellamy, L.J.(1975) The Infrared Spectra of Complex Molecules. Vol. I, Chapman & Hall, London.CrossRefGoogle Scholar
Borello, E. & Zecchina, A. (1963) Infrared spectra of v-triazoles (I). Spectrochim. Acta, 19, 1703–1715.Google Scholar
Farmer, V.C. & Mortland, M.M.(1966) An infrared study of the coordination of pyridine and water to exchangeable cations in montmorillonite and saponite. J. Chem. Soc.A, 344-351.Google Scholar
Nearpass, D.C.(1970) Exchange adsorption of 3-amino-l,2,4 triazole by montmorillonite. Soil Sci., 109, 77–84.CrossRefGoogle Scholar
Rausell-Colom, J.A. & Serratosa, J.M.(1987) Reactions of clays with organic substances. Pp. 371-422 in: Chemistry of Clays and Clay Minerals.(Newman, A.C.D., editor). Mineralogical Society, London.Google Scholar
Russell, J.D., Cruz, M.I. & White, J.L.(1968) The adsorption of 3-amino-triazole by montmorillonite. J. Agr. Food Chem., 16, 21–24.CrossRefGoogle Scholar
Serratosa, J.M.(1966) Infrared analysis of the orientation of pyridine molecules in clay complexes. Clays Clay Miner., 14, 385–391.Google Scholar
Serratosa, J.M.(1968) Infrared study of benzonitrile (C6H5-CN)-montmorillonite complexes. Am. Miner., 53, 1244–1251.Google Scholar
Yariv S., Russell, J.S. & Farmer, V.C. (1966) Infrared study of the adsorption of benzoic acid and nitrobenzene in montmorillonite. Israel J. Chem., 4, 201–213.Google Scholar