Treatment of cell anodes

Details Treatment of cell anodes Treatment of cell anodes

1976-03-08

1977-09-20

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204 95, 204293, 75172R, 148 13, C25B 1110, C25B 126, C21D 100, C22C 504

Patent

active

040495132

ABSTRACT:
An electrode having a conductive platinum alloy coating and which has deteriorated in use in an electrolytic chlorate cell is heat treated at elevated temperatures of above 300.degree. C to regenerate the coating. The regeneration of the coating is exhibited by a decreased oxygen concentration in the cell off gases after the heat treatment. Further improvement in cell characteristics in severely deteriorated anodes may be achieved by coating the anode surface with a platinum group metal prior to or during the heat treatment.

REFERENCES:
patent: 2406172 (1946-08-01), Smithells
patent: 3469074 (1969-09-01), Cotton et al.
patent: 3630768 (1971-12-01), Bianchi et al.
patent: 3684543 (1972-08-01), Nora et al.
patent: 3837879 (1974-09-01), Sluse et al.

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