Processes for the preparation of alkali metal dichromates...

Details Processes for the preparation of alkali metal dichromates... Processes for the preparation of alkali metal dichromates...

C - Chemistry, Metallurgy

25

B

204/59, 204/63

C25B 1/22 (2006.01) C25B 1/00 (2006.01)

Patent

CA 1337981

A process for the preparation of alkali metal dichromates and chromic acid by the electrolysis of monochromate and/or dichromate solutions in an electrolytic cell in which the anode and cathode chambers are separated by a cation exchange member, the improvement wherein the formation of deposits the membrane is prevented comprising continuously introducing a solution containing chromate at a pH of about 3 to 10 into the cathode chamber during the electrolysis.

609440

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