Method of making ".beta."-alumina

Details Method of making ".beta."-alumina Method of making ".beta."-alumina

C - Chemistry, Metallurgy

01

F

23/240

C01F 7/30 (2006.01) C01F 7/02 (2006.01) C04B 35/113 (2006.01)

Patent

CA 1267769

ABSTRACT A method of making beta"-alumina is disclosed. The method comprises dispersing in a precursor of aluminium oxide a member of the group comprising sodium oxide and its precursors, and dispersing in the precursor of aluminium oxide a spinel stabilizer which is a member of the group comprising spinel-forming oxides and the precursors thereof, to form a mixture. The mixture is then heated to a temperature at which at least some of the precursor of aluminium oxide is converted to beta"-alumina. The precursor of aluminium oxide is one which, when calcined in air by itself, has a calcination product which, when subjected to X-ray diffraction, displays a predetermined X-ray diffraction trace.

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