ABSTRACT In this study, gas permeability and selectivity of Vycor glass and alumina membrane were compared by using H2, CO2, CO, CH4 and N2 gases at the temperatures of 323-823 K before and afterapplying the silica coating process. H2 permeability decreased with increasing the temperature before silica coating both in Vycor glass and alumina membrane. However, H2 permeability increased with increasing the temperature, that was an indication of activated transport after silica coating both in Vycor glass and alumina membrane. Lower permeability values and higher selectivities were obtained in Vycor glass membrane than alumina membrane having higher permeability and lower selectivities.
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F. TÜZÜN, E. KOÇDEMİR and G. Uğuz, "Comparison of Gas Permeability and Selectivity Between Alumina Membrane and Vycor Glass at High Temperatures," Advances in Materials Physics and Chemistry, Vol. 2 No. 4, 2012, pp. 237-239. doi: 10.4236/ampc.2012.24B060.