Electrolysis electrode consisting of platinum and tin dioxide

C - Chemistry – Metallurgy – 25 – B

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117/103, 204/195

C25B 11/08 (2006.01) B05D 3/04 (2006.01) C25B 1/26 (2006.01) C25B 11/04 (2006.01)

Patent

CA 1143698

ABSTRACT OF THE DISCLOSURE An electrode for use in the electrolysis of an aqueous solution of a metal halide, the electrode comprising an electri- cally conductive corrosion-resistant substrate and, formed there- on, a coating comprising: 50 to 95 mole % of platinum; and 5 to 50 mole % of tin oxide. Optionally the coating containing 5 to 50 mole % of tin oxide and cobalt oxide, wherein the tin oxide is present in an amount of at least 5 mole % and the cobalt oxide is present in an amount up to 20 mole %. A process for producing the above-described electrode is also disclosed. The electrode is particularly useful for the electrolysis of aqueous metal halide solutions at low concentrations and low temperatures.

334837

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