Production of chromic acid in a three-compartment cell

Details Production of chromic acid in a three-compartment cell Production of chromic acid in a three-compartment cell

1979-05-29

1983-05-24

Andrews, R. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204257, 204258, C25B 900

Patent

active

043849377

ABSTRACT:
Chromic acid is now efficiently prepared in a process using dichromate, such as the dichromate typically available as an intermediate in the chromic acid production from chrome ore. In the process, the dichromate is introduced into the center compartment of a three-compartment electrolytic cell and dichromate-containing center compartment electrolyte flows through a porous diaphragm into the anode compartment of the cell. Electrolyte is introduced to the cell cathode compartment which is separated from the center compartment by a substantially hydraulically impermeable cation-exchange membrane means. During electrolysis, chromic acid is prepared in the anolyte and alkali product is produced in the catholyte.

REFERENCES:
patent: 2081787 (1937-05-01), Boss
patent: 2099658 (1937-11-01), Pearson et al.
patent: 3222267 (1965-12-01), Tirrell et al.
patent: 3305463 (1967-02-01), Carlin
patent: 3454478 (1969-07-01), Carlin
patent: 3523755 (1970-08-01), McRae

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