Porous anode separator

Details Porous anode separator Porous anode separator

C - Chemistry, Metallurgy

25

B

204/195.2

C25B 13/04 (2006.01) C25B 11/04 (2006.01)

Patent

CA 1067858

ABSTRACT OF THE DISCLOSURE A porous anode separator for an electrolytic cell for the electrolysis of alkali metal chloride solu- tions comprises a porous valve metal plate having an electrochemically active coating on the face and a barrier layer on the back and on a portion of the interior. The barrier layer comprises a mixture of a valve metal oxide with a ceramic oxide. Suitable ceramic oxides include those of silicon, aluminum, magnesium, and calcium. The electrochemically active coating comprises a platinum group metal or metal oxide. The porous anodes provide improved gas separation and permit a substantial reduction in the amount of platinum group metal required for the electrochemically active coating.

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