抄録
Ceramic membranes for gas separation have increasing attention because of their promising applications at higher temperatures and in chemically severer environments compared to polymer membranes. In this study, Polymeric precursor-derived microporous ceramic membranes with Si-O and other multicomponent systems have been synthesized on a porous ceramic support. As a typical result, the Si-O membrane exhibited hydrogen permselectivity explained by the molecular sieving mechanism, and H2/N2 selectivity of 137 and H2 permeance of 1.3 x 10-8 mol/m2 ·sec ·Pa were achieved at 573 K. The effects of chemical composition and chemical processing conditions on the membrane properties will be discussed from a view point of the micro-pore structure control for the hydrogen permselectivity through polymeric precursor route. This work has been supported by NEDO as a part of the R&D Project for High Efficiency Hydrogen Production/Separation System using Ceramic Membrane promoted by METI, Japan.
