Porous diaphragms for electrolytic cells having non-uniform hydr

Details Porous diaphragms for electrolytic cells having non-uniform hydr Porous diaphragms for electrolytic cells having non-uniform hydr

1984-08-02

1985-10-01

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204296, C25B 1300

Patent

active

045444749

ABSTRACT:
A porous diaphragm for an electrolytic cell for the electrolysis of alkali metal halides is comprised of a thermoplastic support fabric impregnated with particles of a siliceous composition. The thermoplastic support fabric has an anode side, a cathode side opposite the anode side, and a thickness of at least 0.3 millimeters. The cathode side has a greater hydrophobicity than the anode side. To provide greater hydrophobicity which results in controlled, reduced cell voltages, for example, the cathode side of the support fabric is treated with an oxidizing agent.

REFERENCES:
patent: 4168221 (1979-09-01), Kadija et al.
patent: 4184939 (1980-01-01), Kadija
patent: 4207163 (1980-06-01), Kadija
patent: 4216072 (1980-08-01), Kadija
patent: 4238303 (1980-12-01), Fang
patent: 4278524 (1981-07-01), Kadija

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