| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 봄 (05/02 ~ 05/04, 대구 엑스코(EXCO)) |
| 권호 |
22권 1호 |
| 발표분야 |
우수논문(구두)-박사과정 |
| 제목 |
An Oriented, Hydrophobic, and Siliceous Deca-Dodecasil 3R (DDR) Zeolite Membrane for Carbon Dioxide Separation |
| 초록 |
An all-silica deca-dodecasil 3R (DDR) zeolite has pore size of 0.36*0.44 nm2. The DDR zeolite is highly advantageous for CO2 (0.33 nm) separation from N2 (0.364 nm) via molecular-sieve effects. For the first time, we obtained h0h-oriented, hydrophobic DDR zeolite membranes through the epitaxial growth using a structure directing agent (SDA) of methyltropinium iodide. The degree of the out-of-plane orientation and inter-growth was increased with the hydrothermal reaction time, while decreasing the defects. The DDR membrane showed a CO2/N2 separation factor (SF) of up to 15.9 at 50 ⚬C in the presence of water vapor. The transport of the larger N2 molecule was more suppressed by H2O molecules adsorbed on the membrane surface; it seems that this surface resistance was due to the hydrophobicity of the highly siliceous DDR membrane and helpful for increasing CO2/N2 SFs under wet conditions. |
| 저자 |
정양환, 최정규
|
| 소속 |
고려대 |
| 키워드 |
zeolite membrane; DDR zeolite; gas separation; molecular-sieve effect
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| E-Mail |
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