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Complexes of halloysite with organic compounds

Published online by Cambridge University Press:  09 July 2018

R. M. Carr  and
Hwa Chih
R. M. Carr
Affiliation:
Chemistry Department, University of Otago, New Zealand
Hwa Chih
Affiliation:
Chemistry Department, University of Otago, New Zealand
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Abstract

More than twenty new organic complexes of halloysite have been prepared and one hundred and twenty-seven compounds were tested. Results are compared with those of earlier studies and use is made of recent findings concerning particle morphology and interstratification effects to interpret the results. The compounds which form complexes with halloysite are polar, and are usually either acids or bases. Their molecules usually contain two functional groups (preferably —OH and/or —NH2), are relatively small and have one functional group per two carbon atoms, but do not usually include cyclic or aromatic types. The best explanation of the existence of these metastable complexes seems to lie in the ability of some organic molecules to form hydrogen bonds with the halloysite structure, about which insufficient knowledge is available to allow quantitative evaluations to be made.

Type
Research Article
Information
Clay Minerals , Volume 9 , Issue 2 , December 1971 , pp. 153 - 166
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1971

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