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Electrical Resistance Measurements of Kaolinite and Serpentine Powders During Dehydroxylation

Published online by Cambridge University Press:  01 January 2024

M. Nakahira
M. Nakahira*
Affiliation:
Pennsylvania State University, University Park, Pa., USA
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Abstract

Direct current resistance measurements were made of kaolinite and serpentine powders to follow the changes in resistances during their dehydroxylation processes in air. The resistance of kaolinite remained almost constant during the dehydroxylation, whereas that of serpentine showed a rapid decrease. The formation of distorted lattice sites where the charge carriers are scattered under an electric field was assumed in the former case. On the other hand, the result in the latter case was interpreted in terms of an increasing cation mobility.

Information

Type
Symposium on High Temperature Transformations
Information
Clays and Clay Minerals (National Conference on Clays and Clay Minerals) , Volume 12 , February 1963 , pp. 29 - 33
Copyright
Copyright © The Clay Minerals Society 1963

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Footnotes

Contribution No. 63-57, College of Mineral Industries, The Pennsylvania State University, University Park, Pa.

References

Freund, F. (1960) Die Deutung der Exothermen Reaction des Kaolinits als “Reaction des aktiven Zustandes”: Ber. Deut. Keram. Ges., v. 37, pp. 209–218.Google Scholar
Fripiat, J. J. and Toussaint, F. (1963) Dehydroxylation of kaolinite. II. Conductometric measurements and infrared spectroscopy: J. Phys. Chem., v. 67, pp. 30–36.CrossRefGoogle Scholar
von Hippie, A. (1959) Dielectrics and Waves: John Wiley and Sons, New York, 232pp.Google Scholar
Toussaint, F. (1961) Etude de la déshydroxylation de la kaolinite: Ph.D. Thesis, Université Catholique de Louvain.Google Scholar