Recovery and purification of rhodium

Details Recovery and purification of rhodium Recovery and purification of rhodium

C - Chemistry, Metallurgy

01

G

53/168

C01G 55/00 (2006.01)

Patent

CA 1095258

ABSTRACT A process for the recovery or purification of rhodium wherein :- (i) a solution of a soluble anionic rhodium complex is treated to precipitate insoluble pentammino-chloro rhodium dichloride; (ii) the rhodium is redissolved in the form of the equivalent hydroxo complex cation; (iii) the solution is treated to precipitate the nitrate salt of the pentammino-nitro rhodium complex; (iv) the precipitate is converted to pentammino- chloro rhodium dichloride; and, (v) the latter is calcined to form rhodium metal.

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