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X-ray analysis of an adsorption complex of montmorillonite with cetyltrimethyl ammonium bromide (lissolamine)
Published online by Cambridge University Press: 14 March 2018
Extract
A new method for the determination of the base exchange capacity of small samples of clay minerals has been described by H. van Olphen (1950, 1951). The method is based on the exchange of the exchangeable cations against large organic cations; for the latter, cetyltrimethyl ammonium bromide (lissolamine) was used. The point of complete exchange can be detected by an emulsification test: at the point of equivalence the clay becomes an excellent emulsifier for oilwater systems; this is supposed to be due to its being at one and the same time oleophilic at the surface and hydrophilic at the edges of the particles. It was considered of interest to study the adsorption of lissolamine on clay, as this would contribute to our understanding of the method.
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- Copyright © The Mineralogical Society of Great Britain and Ireland 1955
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