Prevention of metallic salt build-up in permselective membranes

Details Prevention of metallic salt build-up in permselective membranes Prevention of metallic salt build-up in permselective membranes

C - Chemistry, Metallurgy

25

B

204/156, 204/57.

C25B 1/46 (2006.01) C08J 5/22 (2006.01) C25B 9/00 (2006.01) C25B 13/08 (2006.01)

Patent

CA 1071570

ABSTRACT OF THE DISCLOSURE An electrolytic cell suitable for use in the electrolysis of ionizable chemical compounds, particularly alkali metal halide brines and hydrohalic acids, which comprises a cell having therein an anode compartment containing an anode, a cathode com- partment containing a cathode said compartments being separated from each other by at least one cation active perselective memberane which is substantially imprevious to liquids and gases, selected from a hydrolyzed copolymer of a perfluorinated hydro- carbon and a sulfonated perfluorovinle ether and a sulfostyrenated perfluorinated ethlene propylene polymer, said cathode and said inert protective barrier, thereby preventing physical contact of salts on the said membrane thereby extending the efficiency and useful life of the membrane. A polypropylene mesh screen is preferred as the protective barrier.

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