Conversion of manganate to permanganate

Details Conversion of manganate to permanganate Conversion of manganate to permanganate

1989-03-27

1990-03-27

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

204 86, 156642, C25B 128

Patent

active

049118021

ABSTRACT:
An electrolytic oxidation process for producing alkali metal permanganate from alkali metal manganate, and particularly for effecting such production to regenerate a permanganate working bath, such as used in desmearing, etch-back or cleaning processes in the manufacture of printed circuits, which has reached a level of decreased working efficiency, wherein an aqueous alkaline soluiton of manganate in alkali metal hydroxide is electrolytically oxidized using a non-sacrificial anode and a cathode compised of an alkali-resistant electrode immersed in a concentrated aqueous solution of sodium hydroxide in a container porous to ions.

REFERENCES:
patent: 3986941 (1976-10-01), Okabe et al.

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