Novel ceric oxide particulates and process of making

Details Novel ceric oxide particulates and process of making Novel ceric oxide particulates and process of making

1987-12-21

1989-08-22

Niebling, John F.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Rare earth metal

423263, 502304, C01F 100, C01F 1700

Patent

active

048594326

ABSTRACT:
Morphologically improved ceric oxide particulates have a BET specific surface, measured after calcination at a temperature of from 350.degree. to 450.degree. C., of at least 100 m.sup.2 /g, a total pore volume of at least 0.3 cm.sup.3 /g, and the pores of which having a mean diameter larger than 50 .ANG.. The improved ceric oxide particulates are prepared by reacting a cerium salt with a strong base in the presence of carboxylate ions, or a cerium carboxylate with a strong base; separating the precipitate of true cerium hydroxide thus produced; and washing, heat-treating, and calcining such precipitate.

REFERENCES:
patent: 3024199 (1962-05-01), Pasfield
patent: 4049463 (1977-09-01), Hafner
patent: 4140771 (1979-02-01), Berard et al.
patent: 4545923 (1985-10-01), Gradeff et al.
patent: 4647401 (1987-03-01), Gradeff et al.
patent: 4663137 (1987-05-01), Chane-Ching et al.

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