Process for preparing fine particles of metal oxides

Details Process for preparing fine particles of metal oxides Process for preparing fine particles of metal oxides

C - Chemistry, Metallurgy

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C01B 13/32 (2006.01) C01B 13/14 (2006.01) C01B 33/12 (2006.01) C01B 35/10 (2006.01) C01F 7/34 (2006.01) C01F 7/36 (2006.01) C01G 23/053 (2006.01) C01G 25/02 (2006.01)

Patent

CA 1290136

Abstract of the Disclosure A process for preparing spheroidal particles of metal oxides, of average diameter smaller than 3 microns, characterized in that an emulsion is prepared of a hydrolyzable liquid metal compound in: a perfluoropolyether, and the emulsion is reacted with water, water vapor, or with a mixture, in any ratio, of water with a liquid miscible or immiscible with it, which does not interfere with the reaction of the metal compound with water, with the formation of a metal oxide hydrate, which is separated. The metal oxide hydrate is subsequently dried and calcined to the oxide.

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