Patent ID: 8211539
Filing Date: 2012-07-03
Classification: B01D,C01B,Y10T

Abstract:
1. A hydrogen separator comprising: a porous substrate composed mainly of a ceramic having a large number of pores communicating from one surface of the substrate to other surface, and a hydrogen-separating layer made of a hydrogen permselective metal formed on the porous substrate, via an intermediate layer made of an electron-conductive ceramic, wherein the intermediate layer has a thickness between 0.01 μm and 0.5 μm, and the hydrogen-separating layer has a thickness between 1 μm and 5 μm, wherein the electron-conductive ceramic is at least one member selected from the group consisting of indium-tin oxide (In wherein the porous substrate is rigid enough to withstand a pressure differential of at least 800 kPa without deforming or breaking, wherein the hydrogen separator is subjected to a 700° C. heat treatment and there is substantially no change in a porosity of the hydrogen separator after the 700° C. heat treatment, and wherein a pore size of the pores in the porous substrate is between 0.003 and 0.2 μm.