Treatment of catalytic anodes

Details Treatment of catalytic anodes Treatment of catalytic anodes

1974-04-18

1976-06-01

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, 204129, 134 3, B01D 300

Patent

active

039606805

ABSTRACT:
A process for the removal of barium containing scale from anodes which comprises treating the anodes with sulphuric acid containing not more than 10 per cent by weight of water, eg by treating with concentrated sulphuric acid at ambient temperature. The invention is especially applicable to the removal of barium sulphate containing scale from oxide coated metal anodes of the type used in the electrolysis of aqueous alkali metal chloride (eg KCl) brines and wherein the brine use has been subjected to a purification stage which involves the removal of sulphate ions by the addition of barium chloride.

REFERENCES:
patent: 2704281 (1955-03-01), Appell
"Handbook of Chem. & Physics" 1950, 32nd Ed., pp. 556-557.
Handbook of Chemistry & Physics, 32nd Ed., 1950, Chem. Rubber Publishing Co., pp. 580-581, 530, 531.
Handbook of Chemistry & Physics, 32nd Ed., 1950, Chem. Rubber Publishing Co., pp. 460-461.

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