Compositions: ceramic – Ceramic compositions – Refractory
Patent
1992-11-12
1998-11-17
Group, Karl
Compositions: ceramic
Ceramic compositions
Refractory
501 12, 501153, 423628, 2523157, C04B 3510
Patent
active
058376348
ABSTRACT:
A process for preparing a stabilized alumina wherein an aqueous slurry of a precursor boehmite alumina is admixed with an effective amount of a stabilizer such as a water-soluble salt of a polyvalent metal cation of Groups IIA and IIIB of the periodic table, the slurry containing the alumina and the stabilizer being aged at a pH of from about 3 to about 9 and a temperature greater than about 70.degree. C. for a period of time sufficient to convert the greater portion of said alumina to a colloidal sol, the colloidal sol being recovered and calcined to produce a stabilized alumina.
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Mizukami, Nippon Kagaku Kaishi, No. 9, 1542 (1988).
Chavez Mark M.
Decker Ben L.
McLaughlin Kevin J.
CONDEA Vista Company
Group Karl
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