Method of producing compound oxide by using partly citrating pro

Details Method of producing compound oxide by using partly citrating pro Method of producing compound oxide by using partly citrating pro

1993-03-16

1995-09-12

Lieberman, Paul

Superconductor technology: apparatus, material, process

Processes of producing or treating high temperature...

With precipitating from solution

505100, 505734, 505737, 505738, 423593, 423430, 423 87, 4234202, 252518, 252521, H01B 1200, H01L 3912

Patent

active

054496608

ABSTRACT:
A method of producing a compound oxide of elements including at least one of thallium, bismuth, lead, antimony, yttrium, each of rare earth elements, each of transition metal elements, each of alkali metal elements and each of alkaline earth metal elements. The method is comprised of the steps of (i) reacting at least one of carbonate, basic carbonate, hydroxide and co-precipitates of each of the above-mentioned elements with an amount of citric acid that is less than the weight equivalent of citric acid needed to form a completely citrated compound, and (ii) calcining the partly citrated compound. The co-precipitate can be one of a carbonate, a basic carbonate and a hydroxide of each of the above-mentioned elements.

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Marcilly et al Journal of American Ceramic Society, Preparation of Highly Dispersed Mixed Oxides and Oxide Solic Solutions . . . 53(1): 56-57 (1970).

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