Method for electrolysis of an aqueous alkali metal chloride solu

Details Method for electrolysis of an aqueous alkali metal chloride solu Method for electrolysis of an aqueous alkali metal chloride solu

1979-12-18

1980-12-23

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, C25B 134

Patent

active

042408830

ABSTRACT:
Method for electrolysis of an aqueous alkali metal chloride solution is provided, wherein an aqueous alkali metal chloride solution is electrolyzed by maintaining a temperature of an aqueous alkali metal hydroxide liquor in a cathode compartment lower than that of the aqueous alkali metal chloride solution in an anode compartment, using an electrolytic cell which is separated by a cation exchange membrane into the anode compartment and the cathode compartment. Not only is current efficiency improved without adverse effects on voltage, thus enabling a long period operation with low electric power consumption, but also high purity alkali metal hydroxide containing a reduced amount of chloride ion is produced.

REFERENCES:
patent: 3976556 (1976-08-01), De Nora
patent: 4025405 (1977-05-01), Dotson et al.
patent: 4100050 (1978-07-01), Cook, Jr. et al.
patent: 4101395 (1978-07-01), Motani et al.

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