| 摘要 |
PURPOSE: To obtain a stable composite metal membrane having hydrogen permeability and hydrogen selectivity for separating hydrogen from other gases. CONSTITUTION: This composite metal membrane 10 is provided with a hydrogen permeable non-porous base metallic layer 11 and hydrogen permeable non-porous coated metallic layers 13 and 13', which are separated from the non-porous base metallic layer 11 with hydrogen permeable intermediate layers 12 and 12' and each of the intermediate layer is not a pure metal or a metal alloy and is one free from forming a thermodynamically hydrogen non-permeable layer at 400-1,000 deg.C by the reaction with hydrogen, the base metal or the coated metal. |
