Title:
【発明の名称】塩水の電解方法
Document Type and Number:
Japanese Patent JP3344828
Kind Code:
B2
Abstract:
A salt water electrolysis process for electrolyzing an aqueous alkali chloride solution capable of preventing the deterioration of a gas diffusion cathode is disclosed. A cation-exchange membrane (12) having closely disposed to one surface thereof an insoluble metal anode (15) and having closely adhered or mechanically attached to the opposite surface thereof a liquid permeable gas diffusion cathode (23) is disposed in an electrolytic cell, and electrolysis is carried out while supplying salt water to the anode chamber and an oxygen-containing gas containing water as steam or fine water droplets to the cathode chamber, and an alkali hydroxide is obtained from the cathode chamber. The water-containing gas directly reaches the gas diffusion cathode and since the alkali hydroxide and the alkali carbonate formed at the surface of the cathode are dissolved in the water in the gas and removed from the electrolytic cell, deterioration of the gas diffusion cathode can be prevented.
Inventors:
Takayuki Shimamune
Takahiro Ashida
Yoshinori Nishiki
Takahiro Ashida
Yoshinori Nishiki
Application Number:
JP14711294A
Publication Date:
November 18, 2002
Filing Date:
June 06, 1994
Export Citation:
Assignee:
Permelec Electrode Co., Ltd.
Mitsui Chemicals, Inc.
Toa Gosei Co., Ltd.
Kanegafuchi Chemical Industry Co., Ltd.
Mitsui Chemicals, Inc.
Toa Gosei Co., Ltd.
Kanegafuchi Chemical Industry Co., Ltd.
International Classes:
C25B1/16; C25B1/46; C25B9/19; C25B9/23; C25B15/08; (IPC1-7): C25B1/16; C25B9/00; C25B9/08; C25B9/10; C25B9/20; C25B15/08
Domestic Patent References:
| JP54107493A | ||||
| JP5675585A |
Attorney, Agent or Firm:
Hiroyuki Mori