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Cation-dipole interactions in clay organic complexes

Published online by Cambridge University Press:  09 July 2018

K. K. Bissada ,
W. D. Johns  and
F. S. Cheng
K. K. Bissada
Affiliation:
Department of Earth Sciences, Washington University, St Louis
W. D. Johns
Affiliation:
Department of Earth Sciences, Washington University, St Louis
F. S. Cheng
Affiliation:
Department of Earth Sciences, Washington University, St Louis
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Abstract

Quantitative gas chromatographic analyses supplemented by X-ray diffraction studies of the adsorption of ethanol and acetone (as model polar organic compounds) on homoionic montmorillonite revealed marked variation in the number of molecules associated with each exchange cation. The results show increasing association in the order K+ <Na+<Ba2+<Ca2+. K+ and Na+ associate with two and three molecules, respectively, of either ethanol or acetone, and the resulting complexes expand to form a monolayer (∼13 Å). Ba2+ and Ca2+ form both monolayer complexes as well as double layer complexes. In the single layer complexes Ba2+ associates with either four molecules of ethanol or four molecules of acetone, Ca2+ associates with five molecules of ethanol or four molecules of acetone. In the double-layer complexes the observed cation-molecule ratios are 1 : 8 for both Ba2+-ethanol and Ba2+-acetone, 1 : 10 for Ca2+-ethanol, and 1 : 8 for Ca2+-acetone.

The striking dependence of ethanol and acetone adsorption on the nature of the exchangeable cation suggests that cation-dipole interactions play an important role in the adsorption process. Structural models of the organic complexes are presented.

Type
Research Article
Information
Clay Minerals , Volume 7 , Issue 2 , December 1967 , pp. 155 - 166
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1967

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References

Ahrens, L.H. (1964) Physics and Chemistry of the Earth (ed. By Ahrens, L. H. et al.), Vol. 5, p. 1, Macmillan, New York.Google Scholar
Ahrens, L.H. (1966) Geochim. cosmochim. Acta., 30, 1111.CrossRefGoogle Scholar
Barshad, I. (1952) Proc. Soil Sci. Soc. Am. 16, 176.Google Scholar
Benson, S.W. & King, J.W. (1965) Science, N.Y. 19, 1710.CrossRefGoogle Scholar
Bradley, W.F. (1945) J. Am. chem. Soc. 67, 975.CrossRefGoogle Scholar
Bradley, W.F., Weiss, E.J. & Rowland, R.A. (1963) Clays Clay Miner. 10, 117.Google Scholar
Brindley, G.W. (1965) Clay Miner. 6, 91.CrossRefGoogle Scholar
Erindley, G.W. & Hoffmann, R.W. (1962) Clays Clay Miner. 9, 546.Google Scholar
Brindley, G.W. & Moll, W.F. JR (1965) Am. Miner. 50, 1355.Google Scholar
Brindley, G.W. & Ray, S. (1964) Am. Miner. 49, 106.Google Scholar
Emerson, W.W. (1957) Nature, Lond. 180, 48.Google Scholar
Hendricks, S.B., Nelson, R.A. & Alexander, L.T. (1940) J. Am. chem. Soc. 62, 1457.CrossRefGoogle Scholar
Hoffman, R.W. & Brindley, G.W. (1960) Geochim. cosmochim. Acta., 20, 15.Google Scholar
Kerr, P.F., Hamilton, P.K., Pill, R.T., Wheeler, G.V., Lewis, D.R., Brhardt, W., Revo, D., Taylor, G.L., Mielenz, R.C., King, M.E. & Schieltz, N.C. (1950) Preliminary Report No., American Petroleum Institute, Project 49.Google Scholar
MacEwan, D.M.C. (1948) Trans. Faraday Soc. 44, 349.CrossRefGoogle Scholar
MacEwan, D.M.C. (1962) Clays Clay Miner. 9, 431.Google Scholar
McLellan, A.L. (1963) Tables of Experimental Dipole Moments. Freeman & Company, New York.Google Scholar
Mering, J. (1946) Trans. Faraday Soc. 42B, 205.CrossRefGoogle Scholar
Mooney, R.W. (1951) The adsorption of water vapour by the clay minerals kaolinite and montmorillonite. Ph.D. thesis, Cornell University.Google Scholar
Mooney, R.W., Keenan, A.G. & Wood, L.A. (1952) J. Am. chem. Soc. 74, 1371.Google Scholar
van Olphen, H. (1965) J. Colloid Sci. 20, 822.CrossRefGoogle Scholar
Rios, E.G. & Rodriguez, A. (1961) Publicado an Anales de la Real Sociedad Espanola de Fisic. y Quimic., Serie B—Quimica, Tomo LVII(B), p. 117.Google Scholar
Ross, C.S. & Hendricks, S.B. (1945) Minerals of the montmorillonite group. U.S.G.S. Professional Paper 205-B.Google Scholar
Williams, F.B. (1963) Characterization of mixed-layer mica-montmorillonite. Ph.D. thesis, Washington University.Google Scholar