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 μm 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. KInorganic membrane;; SiO2;; TiO2;; Sol-gel;; Nitrogen separation
展开▼
