| 학회 |
한국화학공학회 |
| 학술대회 |
2005년 봄 (04/22 ~ 04/23, 여수대학교) |
| 권호 |
11권 1호, p.225 |
| 발표분야 |
분리기술 |
| 제목 |
Carbon Dioxide Separations through FAU Zeolite Membranes with Diverse membrane thickness and Si/Al ratio |
| 초록 |
Faujasite zeolite membranes with diverse membrane thicknesses (1-20μm) and Si/Al ratio (1.3-1.8) were prepared by hydrothermally treating a porous α-alumina tube in Al2O3-SiO2-Na2O aqueous solutions and the CO2/N2 separation property(separation factor and flux) was evaluated in a He sweeping mode for an equimolar binary gas. The CO2 flux is slightly dependent on the membrane thickness, Si/Al ratio and permeation temperature, while the CO2 flux is highly affected by them. The CO2/N2 separation factor showed a maximum in ones with a membrane thickness of around 5μm and abruptly decreased with increasing permeation temperature. The prepared faujasite zeolite membranes showed an excellent CO2/N2 separation behavior: at a permeation temperature of 30℃, they showed the CO2/N2 separation factor of 30 to 90 and the CO2 flux of 2 x 10-2 to 5 x 10-2 mol/m2sec. In the present study, it was emphasized that a retardation of N2 flux through the micropores is necessary to improve the CO2/N2 separation factor at room temperature or elevated temperatures. |
| 저자 |
김호수1, 조철희2, 안영수2, 한문희2, 김용하1
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| 소속 |
1부경대, 2한국에너지기술(연) |
| 키워드 |
zeolite membrane; CO2/N2 separation
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| E-Mail |
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| 원문파일 |
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