Method for electrolyzing molten metal chlorides

Details Method for electrolyzing molten metal chlorides Method for electrolyzing molten metal chlorides

1978-10-10

1980-03-11

Williams, Howard S.

Chemistry: electrical and wave energy

Processes and products

204 68, 204 69, 204 70, 204290R, C25B 1108, C25C 302, C25C 304, C25C 306

Patent

active

041927249

ABSTRACT:
A method for electrolyzing a molten chloride which comprises electrolyzing a molten bath of a chloride of a metal more base than hydrogen, such as sodium, magnesium, calcium or aluminum, in an electrolytic cell containing an anode and a cathode to form chlorine at the surface of the anode and the metal at the surface of the cathode,
wherein the anode comprises an electrically conductive substrate resistant to corrosion by the molten bath of the metal chloride and the electrolysis products thereof and having thereon a coating of a noble metal oxide, and
with the electrolysis being carried out in the presence of an oxide or oxychloride of a metal more base than the metal formed at the cathode where the concentration of the oxide or oxychloride of the metal present in the molten bath, expressed as the mole fraction of free oxygen ion, is at least about 1.times.10.sup.-4.

REFERENCES:
patent: 4039401 (1977-08-01), Yamada et al.
patent: 4098669 (1978-07-01), de Nora et al.

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