Chemistry: electrical and wave energy – Processes and products
Patent
1977-03-25
1978-10-31
Edmundson, F.C.
Chemistry: electrical and wave energy
Processes and products
204296, C25B 146, C25B 1308
Patent
active
041233360
ABSTRACT:
An aqueous alkali metal halide solution is electrolyzed in an electrolytic cell using a cation exchange membrane which is a fluorocarbon polymer containing sulfonic acid groups and at least one cation exchange group which is less acidic than the sulfonic acid group with higher proportion of the latter in surface stratum on the cathode side of the membrane than in the entire membrane, while controling proton concentration in the anolyte at not higher than critical proton concentration at which no substantial amount of protons in the anolyte penetrate into the membrane.
REFERENCES:
patent: 3909378 (1975-09-01), Walmsley
patent: 3944477 (1976-03-01), Argade
patent: 3960697 (1976-06-01), Kircher et al.
patent: 4024043 (1977-05-01), Dege et al.
Kimoto Kyoji
Masuda Yoshinori
Miyauchi Hirotsugu
Seko Maomi
Yamakoshi Yasumichi
Asahi Kasei Kogyo Kabushiki Kaisha
Edmundson F.C.
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