Method of making analogues of .beta.-alumina

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

1995-01-17

1995-10-17

Bos, Steven

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

429193, C01F 700, C01F 704

Patent

active

054588685

ABSTRACT:
The invention provides a method of making an analogue of .beta."-alumina, the analogue having a layered .beta."-alumina spinel-type structure in which ate least some of the Na ions in the layers of Na ions separated by layers of Al and O ions in said .beta."-alumina spinel-type structure are replaced by substitute metal cations. The substitute metal cations are mono-, d- and/or trivalent. The method comprises dispersing in a boehmite having a well developed and highly ordered crystal structure at least one oxide of the substitute metal cations or a precursor thereof to form a starting mixture, and heating the mixture to a conversion temperature at which it is converted to the analogue.

REFERENCES:
patent: 4210707 (1980-07-01), Farrington
patent: 4664849 (1987-05-01), Farrington et al.
patent: 4732741 (1988-03-01), Duncan et al.
patent: 4946664 (1990-08-01), Van Zyl et al.
Allitsch, G. et al., "Production and characterization of polycrystalline isomorphs of (sodium, strontium) beta-aluminas.", 6001 Chem. Abstr. 110:234095b (1989) Jun. 26, No. 26, Columbus, Ohio, US.

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