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The point of zero charge (pzc) of kaolinite and SiO2+AI2O3 mixtures

Published online by Cambridge University Press:  09 July 2018

M. Tschapek ,
L. Tcheichvili  and
C. Wasowski
M. Tschapek
Affiliation:
Centro de Investigacionespara Industrias Minerales, I.N.T.I., Libertad 1235, Buenos Aires, Argentina
L. Tcheichvili
Affiliation:
Centro de Investigacionespara Industrias Minerales, I.N.T.I., Libertad 1235, Buenos Aires, Argentina
C. Wasowski
Affiliation:
Centro de Investigacionespara Industrias Minerales, I.N.T.I., Libertad 1235, Buenos Aires, Argentina
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Abstract

The pzc of H+-kaolins determined by titration method is nearly pH = 3. The pzc of SiO2 + Al2O3 mixtures is not additive, and depends principally on Al2O3 content in mixture. The curve pzc—t°C (t°C = temperature of treatment of kaolins) has two maxima: 4·7 after treatment at 800-900°C, and 5 after treatment at 1300°C.

Type
Research Article
Information
Clay Minerals , Volume 10 , Issue 4 , December 1974 , pp. 219 - 229
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1974

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