Dimensionally stable anodes and their use in the preparation...

Details Dimensionally stable anodes and their use in the preparation... Dimensionally stable anodes and their use in the preparation...

C - Chemistry, Metallurgy

25

B

204/23, 204/59,

C25B 1/14 (2006.01) C25B 1/22 (2006.01) C25B 11/04 (2006.01) C25B 11/08 (2006.01) C25B 11/10 (2006.01) C25D 3/66 (2006.01)

Patent

CA 2010221

DIMENSIONALLY STABLE ANODES AND THEIR USE IN THE PREPARATION OF ALKALI METAL DICHROMATES AND CHROMIC ACID ABSTRACT OF THE DISCLOSURE A dimensionally stable anode comprised of a) an electrically conductive valve metal b) a conductive intermediate layer and c) an electrode coating of an electrocatalytically active substance, wherein the intermediate layer comprises one or more noble metals or their alloys which have been applied to the valve metal by deposition by electroplating from melts containing noble metal salts. This anode can be used in the production alkali metal dichromates and chromic acid by electrolysis of alkali metal monochromate and/or alkali metal dichromate solutions. Le A 26 713

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