A porous α-alumina tube of 2.5 ㎜ O.D. and 1.9 ㎜ I.D. was used as the support of an inorganic membrane. Macropores of the tube, about 150 nm in size, were plugged with silica formed by thermal decomposition of tetraethylorthosillcate at 600℃. The forced cross-flow CVD method that reactant was evacuated through the porous wall of the support was very effective in plugging macropores. The H_2 permeance of the prepared membrane was of the order of 10^-8 mol s^-1 m^-2 . Pa^-1, while the N_2 permeance was below 10^-11 mol. s^-1 . m^-2 . Pa^-1 at 600℃. This was comparable to that of silica-modified Vycor glass whose size was 4 nm.

• 서봉국(구주대학 재료물리화학과) | Bong-Kuk Suh (Dept. of Materials Physics and Chemistry, Kyushu University)
• 박상욱(부산대학교 화학공학과) | Sang-Wook Parκ (Dept. of Chemical Engineering, Pusan National University)
• 서동수(부산대학교 화학공학과) | Dong-Soo Suh (Dept. of Chemical Engineering, Pusan National University)
• 이재홍(부산대학교 화학공학과) | Jae-Hong Lee (Dept. of Chemical Engineering, Pusan National University)
• 김성수(지산대학 환경관리과) | Sung-Soo Kim (Dept. of Environmental Science & Technology, Jisan College)