Conversion of manganese dioxide to permanganate

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

C - Chemistry, Metallurgy

25

B

204/58

C25B 1/28 (2006.01) H05K 3/00 (2006.01)

Patent

CA 1331578

CONVERSION OF MANGANESE DIOXIDE TO PERMANGANATE ABSTRACT OF THE DISCLOSURE 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.

590993

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