Comparison of ceramic α-alumina and modified γ-alumina membranes for H2 separation

Abstract

The main purpose of this work is to investigate the hydrogen permeation behavior of a commercial ceramic alumina membrane and compare same with that of a γalumina membrane graded with an AlOOH sol using the dip coating method. The permeance of hydrogen and 5 other single gases (He, N2, CH4, CO2 and Ar) were investigated at high temperatures. Mixed gas permeation tests for a H2 gas mixture were also carried out. Results show that the permeance of H2 increased