Synthesis and characterization of nanostructure MFI zeolite membrane

Recently, synthesis and characterization of zeolite membrane attract more attention for gas separation. In this study, MFI zeolite membrane was synthesized on porous α-Al2O3 disk support by using hydrothermal method at 443K. The membranes were analyzed by XRD and SEM. Permeability of CO2 and CH4 measured for membrane as function of feed pressure and operation temperature. Permeation was measured by using pressure drop method at different temperature (303, 323, 343, 363K) and feed pressure (0.5, 1, 1.5, 2 bar). The results show main separation mechanism was adsorption in experiments temperature domain. CO2 and CH4 permeation decreased with increasing temperature also single gas fluxes increased linearly with increasing feed pressure. CO2 and CH4 fluxes at 303K and 2 bar were 2.410-7 and 4.0710-7 mol.m-2.s-1.Pa-1 respectively and the highest ideal selectivity obtained 1.98 at 363K and 0.5 bar.