Preparing porous diaphragms for electrolytic cells having non-un

Details Preparing porous diaphragms for electrolytic cells having non-un Preparing porous diaphragms for electrolytic cells having non-un

1981-12-21

1984-08-28

Thurlow, Jeffery R.

Plastic and nonmetallic article shaping or treating: processes

Reactive gas or vapor treatment of work

Work is organic material

204252, 204253, 204295, 204296, 264104, 264344, 429252, B29C 2500, B29D 2700

Patent

active

044683600

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: 4056447 (1977-11-01), Giuffre et al.
patent: 4089759 (1978-05-01), Krumpelt et al.
patent: 4168221 (1979-09-01), Kadija et al.
patent: 4184939 (1980-01-01), Kadija
patent: 4207163 (1980-06-01), Kadija
patent: 4207164 (1980-06-01), Kadija
patent: 4216072 (1980-08-01), Kadija
patent: 4258081 (1981-03-01), Kadija
patent: 4278524 (1981-07-01), Kadija
"Catalyst Carriers to Chloralkali", Encyclopedia of Chemical Processing and Design, vol. 7, p. 346, (1978).

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