Electrolysis of alkali metal chloride

Details Electrolysis of alkali metal chloride Electrolysis of alkali metal chloride

1974-04-23

1976-01-20

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

204128, C25B 116, C25B 126

Patent

active

039336034

ABSTRACT:
Alkali metal hydroxide is produced by electrolysis of alkali metal chloride according to an improved diaphragm process wherein plural cationic ion-exchange membranes are used to divide an electrolytic cell into an anode compartment, at least one middle compartment and a cathode compartment. The ion-exchange membrane confronting anode is preferably substantially resistant to anode reaction products such as chlorine or chlorates. Alkali formed by electrolysis is recovered from cathode compartment or alternatively a portion thereof may be taken out from middle compartments at various concentrations. Alkali metal hydroxide can be produced in high purity and high concentration with excellent efficiency.

REFERENCES:
patent: 2967807 (1961-01-01), Osborne et al.
patent: 3220941 (1965-11-01), Osborne
patent: 3438879 (1969-04-01), Kircher et al.

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