Method of preparing vanadium pentoxide

Details Method of preparing vanadium pentoxide Method of preparing vanadium pentoxide

1976-08-23

1977-08-02

Carter, Herbert T.

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

423 65, 423 67, 423593, C01G 3100

Patent

active

040395820

ABSTRACT:
The invention relates to methods of preparing vanadium pentoxide from a vanadium-containing solution, and more particularly, from a sodium vanadate solution. The method consists in that the solution is treated at a pH of 4 to 6 with ammonium chloride or sulphate to prepare an ammonium-vandate salt precipitate which is then dissolved in hot water, and recrystallized by a mineral acid. The new precipitate of the ammonium-vanadate salt is calcined to prepare vanadium pentoxide. The advantage of the proposed method is a highly increased degree of precipitation of the ammonium-vanadate salt from the solution of sodium vanadate and a corresponding decrease of vanadium loss with wastes to at least four times.

REFERENCES:
patent: 2357466 (1944-09-01), Frick
patent: 3087786 (1963-04-01), Schoder
patent: 3472612 (1969-10-01), Michel et al.
patent: 3728442 (1973-04-01), Pakhomov

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