Catalytic microporous zirconia particulates

Details Catalytic microporous zirconia particulates Catalytic microporous zirconia particulates

1992-06-12

1995-01-10

Sneed, Helen M. S.

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502348, 502201, 502217, 502174, 502208, 502171, B01J 27053, B01J 2718, B01J 27232, B01J 2725, B01J 3138, B01J 3730, B01J 2106

Patent

active

053806913

ABSTRACT:
Highly microporous zirconia particulates having pore sizes of an average diameter of less than 20 .ANG. (2 nm), well adapted as catalysts and catalyst supports, are prepared by thermohydrolyzing a zirconium salt, separating the resulting precipitate from the medium of thermohydrolysis and then calcining such precipitate, and wherein an anion more covalent than the hydroxyl anion, e.g., a nitrate, sulfate, phosphate or carboxylate, is incorporated into such precipitate upstream of the calcination thereof.

REFERENCES:
patent: 3132110 (1964-05-01), Hansford
patent: 4600702 (1986-07-01), Schumacher
patent: 4661330 (1987-04-01), Chane-Ching et al.
patent: 4845069 (1989-07-01), Fellman et al.
patent: 5015373 (1991-05-01), Carr et al.
patent: 5064628 (1991-11-01), Chane-Ching et al.
Patent Abstract of Japan, vol. 10, No. 128, pub. May 13, 1986; JP-A-60-266-622 Derwent Abstract Only.
Patent Abstract of Japan, vol. 12, No. 198, pub. Jun. 8, 1988; No. JP-A-63-2809 Derwent Abstract Only.

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