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Formation of Highly Selective Cesium-Exchange Sites in Montmorillonites

Published online by Cambridge University Press:  02 April 2024

André Maes ,
Dirk Verheyden  and
Adrien Cremers
André Maes
Affiliation:
Afdeling Interfasechemie, Katholieke Universiteit Leuven, Kardinaal Mercierlaan 92, B-3030 Leuven, Belgium
Dirk Verheyden
Affiliation:
Afdeling Interfasechemie, Katholieke Universiteit Leuven, Kardinaal Mercierlaan 92, B-3030 Leuven, Belgium
Adrien Cremers
Affiliation:
Afdeling Interfasechemie, Katholieke Universiteit Leuven, Kardinaal Mercierlaan 92, B-3030 Leuven, Belgium
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Abstract

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Ion-exchange sites with very high selectivity for Cs (ΔGCa2+Cs+ = 40 kJ/eq) similar to illite were generated in a controlled way in montmorillonites b. (1) repeated wetting-drying cycles and b. (2) charge reduction using the Hofmann-Klemen effect. An almost continuous range of sites with selectivities varying from ln KCa2+Cs+ = 33 to 5 was observed.

Keywords

Cation exchangeCation selectivityCesiumHofmann-Klemen effectMontmorilloniteWetting-drying
Type
Research Article
Information
Clays and Clay Minerals , Volume 33 , Issue 3 , June 1985 , pp. 251 - 257
Copyright
Copyright © 1985, The Clay Minerals Society

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