Patent ID: 6767447
Filing Date: 2004-07-27
Classification: C25B

Abstract:
An electrolytic cell for hydrogen peroxide production, which comprises an electrolytic cell having an anode and a cathode therein, means for supplying to the electrolytic cell an oxygen-containing gas and a feed water containing at least one salt selected from the group consisting of chlorides, sulfates, nitrates and acetates of a univalent metal dissolved therein in a concentration of from 0.001 to 0.1 M, and means for conducting electrolysis while supplying said oxygen-containing gas and feed water to thereby produce hydrogen peroxide, said electrolytic cell comprising a diaphragm partitioning the electrolytic cell into an anode chamber including the anode and a cathode chamber including an oxygen gas diffusion cathode, said oxygen gas diffusion cathode partitioning said cathode chamber into a gas chamber and a solution chamber positioned between the gas chamber and the diaphragm, said electrolytic cell comprising means for supplying an oxygen-containing gas to said oxygen gas diffusion cathode and feed water to said solution chamber, and an outlet for recovering hydrogen peroxide solution from said solution chamber.