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논문 기본 정보

자료유형
학술저널
저자정보
Lee, Kew-Ho (Membranes and Separation Research Center, Korea Research Institute of Chemical Technology) Sea, Bongkuk (Membranes and Separation Research Center, Korea Research Institute of Chemical Technology) Youn, Min-Young (Membranes and Separation Research Center, Korea Research Institute of Chemical Technology) Lee, Yoon-Gyu (Membranes and Separation Research Center, Korea Research Institute of Chemical Technology) Lee, Dong-Wook (Membranes and Separation Research Center, Korea Research Institute of Chemical Technology)
저널정보
한국막학회 Korean Membrane Journal Korean membrane journal 제6권 제1호
발행연도
2004.1
수록면
10 - 15 (6page)

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We developed a water-selective ceramic composite membrane for use as a dehydration membrane reactor for dimethylether (DME) synthesis from methanol. The membranes were modified on the porous stainless steel support by the sol-gel method accompanied by a suction process. The improved membrane modification process was effective in increasing the vapour permselectivity by removal of defects and pinholes. The optimized alumina/silica composite membrane exhibited a water permeance of 1.14${\times}$10$^{-7}$ mol/$m^2$.sec.Pa and a water/methanol selectivity of 8.4 at permeation temperature of 25$0^{\circ}C$. The catalytic reaction for DME synthesis from methanol using the membrane was performed at 23$0^{\circ}C$, and the reaction conversion was compared with that of the conventional fixed-bed reactor. The reaction conversion of the membrane reactor was much higher than that of the conventional fixed-bed reactor. The reaction conversion of the membrane reactor and the conventional fixed-bed reactor was 82.5 and 68.0%, respectively. This improvement of reaction efficiency can last if the water vapour produced in the reaction zone is removed continuously.

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