ELECTROLYTIC CELL FOR AQUEOUS ALKALI CHLORIDE SOLUTION

摘要

PURPOSE:To decrease the cell voltage of a titled electrolytic cell and to improve electric current efficiency, by bringing a cation exchange membrane consisting of a fluoropolymer and a cathode into tight contact with each other via a thin layer consisting of an inorg. ion exchanger. CONSTITUTION:An electrolytic cell wherein an anode chamber having an anode and a cathode chamber having a cathode are divided by a cation exchange membrane consisting of a fluoropolymer, an aq. alkali chloride soln. is introduced into the anode chamber and caustic alkali is formed in the cathode chamber by electrosis is improved as follows: A thin layer of an inorg. ion exchanger is interposed between the cation exchange membrane and the cathode and the cation exchange membrane and the cathode are brought into tight contact with each other via said thin layer. Then, the phenomenon of the stagnation of the hydrogen foam covering the surface of the cation exchange membrane is hardly admitted and the low cell voltage is maintained.