Patent ID: 9149762
Filing Date: 2015-10-06
Classification: B01D,C01B,C23C

Abstract:
1. A method for producing a defect-free hydrogen separation membrane, comprising: an activation step of immersing one surface of a porous ceramic support in a solution containing an activating metal; a first metal layer forming step of immersing said one surface of the porous ceramic support in a plating solution containing palladium ions to form a first metal layer containing palladium without artificially producing pressure-differential between the one surface and the other surface of a porous support; and a pressure difference applying step of immersing said one surface of the porous support with said first metal layer in a plating solution containing palladium ions, such that a pressure at the one surface side of the porous support is higher than a pressure at the other surface side, wherein the first metal layer forming step is, substantially without abrading or polishing the first metal layer, followed by the pressure difference applying step; and wherein palladium closes defects being open on the surface of said first metal layer during deposition on the surface.