Method for producing vanadium electrolytic solution

Details Method for producing vanadium electrolytic solution Method for producing vanadium electrolytic solution

1993-04-01

1994-11-29

Straub, Gary P.

Compositions

Electrolytes for electrical devices

423 67, 423544, 429205, 204 86, C01G 3100

Patent

active

053687620

ABSTRACT:
Tri- and tetravalent vanadium solutions suitable for a redox battery are produced as follows. Vanadium pentaoxide or ammonium vanadium is reduced in the presence of a concentrated sulfuric acid and a reducer, thus producing a solution containing tetravalent vanadium. At least a portion of the trivalent vanadium solution is heated to 180.degree.-250.degree. C., thus producing a trivalent vanadium compound. If the trivalent compound produced is a solid, it is collected and solubilized in water and/or sulfuric acid. Then, unreacted sulfur is filtered out, thus obtaining a trivalent vanadium solution.

REFERENCES:
patent: 4126663 (1978-11-01), Pitts
patent: 4786567 (1988-11-01), Skyllas-Kazacos et al.
patent: 4913885 (1990-04-01), Seon et al.
patent: 5250158 (1993-10-01), Kaneko et al.
Inorganic Syntheses-vol. VII, 1963, pp. 92-94, Ludwig F. Audrieth, et al.

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