| 학회 |
한국공업화학회 |
| 학술대회 |
2018년 가을 (10/31 ~ 11/02, 제주국제컨벤션센터(ICC JEJU)) |
| 권호 |
22권 2호 |
| 발표분야 |
환경.에너지_포스터 |
| 제목 |
All-Silica Deca-dodecasil 3R (DDR) Zeolite Membrane for CO2 Separation: Elucidation of Hydrophobic Effect on DDR Membrane |
| 초록 |
An all-silica deca-dodecasil 3R (Si-DDR) zeolite with a pore size of 0.36 × 0.44 nm2 is highly suitable for separation of CO2 (0.33 nm) from N2 (0.364 nm) based on molecular-sieving effect. Hydrophobic DDR zeolite films with h0h-orientation were fabricated by the epitaxial growth of a DDR seed layer. The degree of the out-of-plane orientation and inter-growth was increased with the secondary growth time. On the other hand, the defects that provide non-selective pathways reduced as the DDR membrane grew. The CO2/N2 separation factor (SF) of the DDR membrane could be achieved up to 15.9 at 50 °C in the presence of H2O molecules. The diffusion of the larger N2 molecule was more hindered by H2O molecules adsorbed on the membrane surface; it indicates that this surface resistance caused by H2O vapor was developed due to the hydrophobicity of the DDR membrane. |
| 저자 |
이민성, 최정규
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| 소속 |
고려대 |
| 키워드 |
Deca-dodecasil 3R; DDR; DD3R; Zeolite; Membrane; CO2; N2; Separation; Hydrophobicity
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| E-Mail |
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