Method for extending cathode life

Details Method for extending cathode life Method for extending cathode life

1981-05-21

1982-11-09

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, C25B 134

Patent

active

043583539

ABSTRACT:
A method is provided for extending the life of transition metal-based cathodes used in chlor-alkali diaphragm cells by adding a small amount of a reducing agent, such as Na.sub.2 SO.sub.3 or urea, to the electrolytic solution during periods of interrupted current flow to the cell. The reducing agent reacts with the sodium hypochlorite which is dissolved in the electrolytic solution to prevent the oxidation, and hence dissolution, of the transition metal in the cathode coating.

REFERENCES:
patent: 4146445 (1979-03-01), Cook et al.

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