Method for electrolytic production of hydrogen

Details Method for electrolytic production of hydrogen Method for electrolytic production of hydrogen

C - Chemistry, Metallurgy

25

B

204/57, 204/78.3

C25B 1/10 (2006.01) C25B 1/02 (2006.01) C25B 1/22 (2006.01)

Patent

CA 1153333

Abstract of the Disclosure A reduction of the voltage across an electrolysis cell in which hydrogen is produced in the sulfuric acid hybrid closed cycle process by use of an electrolysis cell having an intermediate chamber between the anode and cathode chamber through which a separate electrolyte is caused to flow, is obtainable under operation with the electrolytes in both the cathode and the anode chambers having a concentration of sulfuric acid by weight of about 50% or more. It is found that the undesired formation of hydrogen sulfide and of sulfur remains at a tolerable small level if the catholyte is continuously renewed. A low specific resistance cation membrane is preferably used between the cathode and intermediate chambers, as well as between the anode and inter- mediate chambers.

370230

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