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Yaghoob Farhang-Ghoje Biglu,Ehsan Taheri-Nassaj 한국공업화학회 2013 Journal of Industrial and Engineering Chemistry Vol.19 No.5
Membrane of SiO2–10TiO2 was produced by dip coating on mesoporous-titania-coated macroporous alumina support. The amorphous SiO2–10TiO2 top layer with thickness of 0.9 mm was obtained as a homogenous and defect free surface. Gas permeation tests show a decrease in permeation in order of CH4 > N2 for the support, and N2 > CH4 for the multilayer membrane. The membrane delivering promised single gas separation factor for N2/CH4 (1.75). It was also observed that the membrane separation factor in binary gas mixture was 12–15% of the single gas separation factor, while the permeation revealed a decrease in gas mixture.