| 摘要 |
PURPOSE:To provide a titled electrolytic cell which protects inexpensively a cation exchange membrane with a simple technique and can operate on a low voltage, by the constitution wherein a cathode or/and anode are adhered tightly to the cation exchange membrane via rough surface films having liquid permeability and foam desorbability. CONSTITUTION:Rough surface films 14 having liquid permeability and foam desorbability are integrally superposed with a material 13 which is dissolved by electrolysis on both surfaces of a cation exchange membrane 12 to form a composite membrane 11, and a cathode 1 and an anode 19 placed oppositely to the films 14 are adhered tightly to the films 14 in an electrolytic cell by a vertical ion exchange membrane method for electrolysis of an aq. alkali chloride soln. which produces alkali hydroxide. The cathode 1 is formed by plating Rh, etc. on a base material of iron or the like which is made porous. The anode 19 is formed by plating Pt or the like on a base material of Ti, or the like which is made porous, and both electrodes are mounted to the top part of a conductive bar 6 of copper or the like. The rough surface films 14 of the composite membrane 11 are obtd. by supplying a raw material liquid contg. carbon powder, asbestos fibers and a binder onto soluble Japanese paper to form a porous layer and calcining the same after filtering, drying and dehydrating. |
