Novel ceric oxides and preparation thereof

Details Novel ceric oxides and preparation thereof Novel ceric oxides and preparation thereof

1990-02-22

1991-11-12

Russel, Jeffrey E.

Chemistry of inorganic compounds

Rare earth compound

502304, B01J 2310, C01F 1700

Patent

active

050646281

ABSTRACT:
Provided is a ceric oxide having a specific surface of at least 85 m.sup.2 /g after calcination between 350.degree. and 550.degree. C., and being further characterized in that it has a pore volume of at least 0.15 cm.sup.3 /g and a median pore diameter greater than 50 .ANG.. The ceric oxide is prepared by destabilizing an aqueous colloidal dispersion of a cerium (IV) compound by the addition of base thereto, separating the precipitate which results and subjecting it to a heat treatment.

REFERENCES:
patent: 3761571 (1973-09-01), Woodhead
patent: 4661330 (1987-04-01), Chane-Ching et al.
patent: 4663137 (1987-05-01), Chane-Ching et al.
patent: 4859432 (1989-08-01), David et al.
Chemical Abstracts, vol. 96, 1961, 95:189463d, "Cerium Dioxide".

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