The development of porous microstructures during the dehydration of boehmite
Author:
- S. J. WilsonSWS. J. Wilson
- 1 June 1979
- journal article
- Published by Mineralogical Society in Mineralogical Magazine
- Vol. 43 (326) , 301-306
Abstract
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.Keywords
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