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The role of water vapour in the dehydroxylation of clay minerals

Published online by Cambridge University Press:  14 March 2018

G. W. Brindley  and
M. Nakahira
G. W. Brindley
Affiliation:
Department of Ceramic Technology, The Pennsylvania State University, University Park, Pa., U.S.A.
M. Nakahira
Affiliation:
Department of Ceramic Technology, The Pennsylvania State University, University Park, Pa., U.S.A.
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Abstract

Water vapour atmospheres are known to raise the temperature of the endothermic reaction of clay minerals in differential thermal analyses. In isothermal kinetic studies of dehydroxylation, it is shown that a stationary state is attained depending on the operating temperature. The rate of dehydroxylation is a function of specimen size and shape, which suggests a controlling influence by entrapped water vapour. Even at constant reaction temperatures, the rate of dehydroxylation varies greatly between the interior and the exterior of a specimen. The bearing of these results on thermal analyses and on kinetic studies generally is discussed.

Type
Research Article
Information
Clay Minerals Bulletin , Volume 3 , Issue 17 , August 1957 , pp. 114 - 119
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1957

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References

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