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The development of porous microstructures during the dehydration of boehmite

Published online by Cambridge University Press:  05 July 2018

S. J. Wilson
S. J. Wilson*
Affiliation:
Department of Mineralogy and Petrology, University of Cambridge
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Summary

Electron-microscope observations have been used to follow the low-temperature dehydration of boehmite, and show that a coherent skeleton of γ-Al2O3 with a porous texture is produced. For material fired in air the development of a number of pore systems is described. Of these the most important, as far as the dehydration process is concerned, is a lamellar pore system parallel to (001)γ and having a regular spacing of the order of 35–40. Å. A much faster dehydration process is induced by exposure to the electron beam and results in the formation of a more randomly oriented pore structure. The observed microstructure and the calculated internal surface area are compared with the results of previous adsorption studies.

Type
Research Article
Information
Mineralogical Magazine , Volume 43 , Issue 326 , June 1979 , pp. 301 - 306
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1979

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