Process for producing a powder of perovskite-type double oxide

Details Process for producing a powder of perovskite-type double oxide Process for producing a powder of perovskite-type double oxide

1991-01-09

1993-07-20

Lewis, Michael

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423598, 423599, 501134, 501135, 501136, C01G 2100, C01G 3300

Patent

active

052291014

ABSTRACT:
A process for producing a powder of perovskite-type double oxide comprises the steps of reacting water-soluble lead oxide and aqueous solution of alkaline metal in a reaction vessel, and precipitating lead group hydroxide; then adding a solution of Nb group, precipitating Nb group hydroxide, and reacting hydrothermally in the reaction vessel. As a result, according to the present invention, the process of manufacture is capable of producing fine particles of pure perovskite phase, which particles are excellent in homogeneity and the degree of sintering.

REFERENCES:
patent: 3963630 (1976-06-01), Yonezawa et al.
patent: 4643984 (1987-02-01), Abe et al.
patent: 4820669 (1989-04-01), Kato et al.
patent: 5112433 (1992-05-01), Dawson et al.
Grant & Hackh's "Chemical Dictionary", Fifth Edition, 1977 p. 157.

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