Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group iiia metal or beryllium
Patent
1986-05-21
1988-03-22
Garvin, Sr., Patrick P.
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group iiia metal or beryllium
423600, 423625, 423627, 429193, C01F 706
Patent
active
047327413
ABSTRACT:
A method of making beta"-alumina comprises dispersing in a precursor of aluminum oxide a member of the group comprising sodium oxide and its precursors, and dispersing in the precursor of aluminum 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 aluminum oxide is converted to beta"-alumina. The precursor of aluminum 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. The X-ray diffraction trace is one whose peak with the highest intensity in the 2 (theta) range of 44.degree.-48.degree. and whose peak with the highest intensity in the 2 (theta) range of 63.degree.-69.degree. respectively have maximum intensities and integrated intensities which comply with equations (I) and (II):
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Conversion Catalysis and Microstructure Control in the Sintering of Lithia-Stabilized Beta-Alumina by Jatkar, et al.
Pre-Pilot and Pilot Plant Development of Beta-Alumina Electrolytes and Rutile-Container Current Collectors for the Sodium Sulphur Battery, by R. S. Gordon on behalf of the University of Utah, Utah Research Institute and Ceramatic, Inc. to the Ford Motor Company for the U.S. Department of Energy, Jan. 1979.
Barrow Peter
Duncan James H.
Kingon Angus I.
Van Zyl Arnold
Garvin, Sr. Patrick P.
Harvey Paige C.
Lilliwyte Societe Anonyme
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