Electrolytic production of hydrogen peroxide and alkali metal hydroxide

Abstract From the Canadian patent

Hydrogen peroxide is made electrolytically in a threecompartment cell having an anion-active permselective membrane separating anode and buffer compartments and a cation-active permselective membrane separating the buffer compartment and cathode compartment, by feeding sulfuric acid to the anode compartment alkali metal sulfate to the buffer compartment and water to the cathode compartment and withdrawing substantially sulfate-free alkali metal hydroxide solution from the cathode compartment and persulfuric acid from the anode compartment after which the persulfuric, acid is hydrolyzed to produce hydrogen peroxide and sulfuric acid. The process is particularly useful for supplying hydrogen …