Process for the production of alkali dichromates and chromic aci

Details Process for the production of alkali dichromates and chromic aci Process for the production of alkali dichromates and chromic aci

1989-08-11

1991-01-01

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 89, 204 97, 204290F, C25B 122, C25B 100

Patent

active

049815733

ABSTRACT:
A process for the production of alkali dichromates and chromic acid by electrolysis of alkali monochromate or alkali dichromate solutions wherein the anodes used in the electrolysis are dimensionally stable anodes of valve metals activated by electrodeposition of noble metals and/or noble compounds from melts containing noble metal salts.

REFERENCES:
patent: 3305463 (1967-02-01), Carlin
patent: 3309292 (1967-03-01), Andrews et al.
patent: 3454478 (1969-08-01), Carlin
Harding, "The Electrodeposition of Platinum, Iridium and Platinum-Iridium Alloy Coatings from Molten Salt Electrolytes", Plating and Surface Finishing, pp. 30-35, Feb. 1978.
Metall, vol. 34, No. 11, Nov. 1980, pp. 1016 and 1018.
Galvanotechnik, vol. 70, 1979, pp. 420 to 428.
Galvanotechnik, vol. 70, No. 5, 1979, pp. 420-428; J. Wurm: "Elektolytische Beschichtungen aus der Salzschmelze", *p. 425, Absatz 4.3*.

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