Preparation of Larnthanum β‐Alumina with High Surface Area by Coprecipitation
Authors:
- 1 July 1987
- journal article
- Published by Wiley in Journal of the American Ceramic Society
- Vol. 70 (7) , C‐157-C‐159
Abstract
Mixtures of La 2 O 3 and Al 2 O 3 with various La contents were prepared by co‐precipitation from La(NO 3 ) 3 and Al(NO 3 ) 3 solutions and calcined at 800° to 1400°C. The addition of small amounts of La 2 O 3 (2 to 10 mol%) to Al 2 O 3 gives rise to the formation of lanthanum β‐alumina (La 2 O 3 ·11–14Al 2 O 3 ) upon heating to above 1000°C and retards the transformation of γ‐Al 2 O 3 to α‐Al 2 O 3 and associated sintering.Keywords
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