Electrolytic production of alkali metal hydroxide

Details Electrolytic production of alkali metal hydroxide Electrolytic production of alkali metal hydroxide

1976-06-25

1977-11-08

Sebastian, Leland A.

Chemistry: electrical and wave energy

Processes and products

204255, 204257, C25B 114, C25C 700

Patent

active

040574741

ABSTRACT:
In the process of making aqueous alkali metal hydroxide solution and diatomic halide gas by electrolysis of aqueous alkali metal halide solution in a bank of cationic permselective membrane cells, current efficiency is improved and/or concentration of the alkali metal hydroxide solution product is increased by feeding water to the cathode compartment of the first cell and then transferring the catholyte serially from cell to cell at incrementally increasing alkali metal hydroxide concentration, and withdrawing alkali metal hydroxide product solution from the last cell of the bank.

REFERENCES:
patent: 3899403 (1975-08-01), Cook et al.
patent: 3963592 (1976-06-01), Lindstrom

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