Conversion of manganese dioxide to permanganate

Details Conversion of manganese dioxide to permanganate Conversion of manganese dioxide to permanganate

1988-03-09

1989-08-01

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 86, 252 791, C25B 128

Patent

active

048530956

ABSTRACT:
A process is described for the electrolytic oxidation of manganese dioxide to an alkali metal permanganate by carrying out the electrolysis in dilute alkali metal hydroxide solution using a non-sacrificial anode and a cathode comprising an alkali-resistant electrode immersed in concentrated alkali metal hydroxide solution in a porous container. The process is particularly adapted to the regeneration of alkali metal permanganate from manganese dioxide which has been precipitated during use of a permanganate bath as an etchant in the fabrication of printed circuit boards and like purposes.

REFERENCES:
patent: 3293160 (1966-12-01), Mazzuchelli et al.
patent: 3986941 (1976-10-01), Okabe et al.
patent: 4102982 (1978-07-01), Weir, Jr.
patent: 4117080 (1978-09-01), Kawasaki et al.
patent: 4592852 (1986-06-01), Courduvelis
Innes et al., Plating and Surface Finishing, Nov. 1978, pp. 36-40.

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