| 摘要 |
PURPOSE:To form the titled membrane having gas permeability and suitable for the electrode, etc., of an electrolytic apparatus by providing a reaction layer carrying a catalyst on the surface of a porous gas-permeable layer obtained by binding electrically conductive fine particles. CONSTITUTION:A gas-permeable membrane is formed by a porous gas-permeable layer 1 obtained by binding electrically conductive fine particles and a reaction layer 2 carrying a catalyst. The thickness of the gas-permeable layer 1 is regulated to about 0.3-2mm, continuous pores having <=800Angstrom diameter are formed in the porous body and the porosity is controlled to about 40-80%. Iron, graphite, etc., are used for the conductive fine particles and a high molecular org. compd. (PTFE, etc.) is used as the binder. The thickness of the reaction layer 2 is regulated to <=about 1.0mm, the diameter of the pore is controlled to about 0.5-0.01mu and the prosity is preferably adjusted to about 40-80%. Ni, Co, Pt, Ru, etc., are used as the catalyst, the conductive fine particles used in the permeable layer 1 are bound with a binder to form the carrier and the diameter of the conductive particle is preferably regulated to <=about 0.5mu. |
