Method for electrochemical generation of alkaline peroxide...

Details Method for electrochemical generation of alkaline peroxide... Method for electrochemical generation of alkaline peroxide...

C - Chemistry, Metallurgy

25

B

204/58

C25B 1/30 (2006.01)

Patent

CA 1214747

ABSTRACT A method of producing alkaline peroxide, and a solution for use therein, comprising electrolyzing an alkaline solution in the presence of oxygen, in an electrochemical cell. The solution used contains a transition metal ion complexing agent which may be ineffective in complexing transition metal ions in the strongly alkaline solutions used. Such method inhibits reduction in current efficiency of the electrochemical cell during long term operation. In addition, the method may be advantageously used to increase current efficiency in an electrochemical cell previously used for producing alkaline peroxide with a solution which did not contain a metal ion complexing agent, and which cell is suffering from substantially reduced current efficiency. The pH of the solutions used is typically greater than or equal to about 13.

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