Process for preparing compound metal oxides

Details Process for preparing compound metal oxides Process for preparing compound metal oxides

1988-08-01

1989-12-12

Stoll, Robert L.

Superconductor technology: apparatus, material, process

High temperature , per se

Having tc greater than or equal to 150 k

423593, 423604, 423636, 423639, 423337, 423263, 502525, 502355, 501123, 501126, 501152, 501 94, 501 1, 252 51, C01G 300

Patent

active

048867772

ABSTRACT:
A process for preparing compound metal oxides, a superconductive compound oxides for instance, is disclosed. The process comprises preparing an aqueous solution containing a predetermined content ratio of chloride, nitrate or acetate of a rare earth metal, an alkaline earth metal and copper, slightly basifying the solution to form hydroxides of the rare earth metal and copper and then introducing carbon dioxide to form carbonate of the alkaline earth metal, collecting the thus formed mixed precipitate of hydroxides and carbonate and firing it.

REFERENCES:
patent: 4804649 (1989-02-01), Sherif
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