| 학회 | 한국화학공학회 |
| 학술대회 | 2013년 봄 (04/24 ~ 04/26, 광주 김대중컨벤션센터) |
| 권호 | 19권 1호, p.312 |
| 발표분야 | 분리기술 |
| 제목 | CO2/CH4 separation properties of alicyclic dianhydride based soluble copolyimide membranes |
| 초록 | CH4 is emitted from landfills or during anaerobic digestion of activated sludge, food wastes and animal wastes. CH4 has 21 times larger global warming potential than CO2 and has the 2nd largest contribution to global warming. The upgrading of CH4 is very important in terms of both prevention of global warming and security of renewable energy for vehicle fuels or gas grid injection. Biogas can be efficiently upgraded by removing CO2 and H2S via membrane process. The performance of membrane process depends mainly upon CO2/CH4 selectivity and CO2 permeability of membrane materials. The objective of this study is to develop good membrane materials with high CO2 permeability and high CO2/CH4 selectivity. We have developed novel alicyclic dianhydride-diamine (DOCDA-ODA) based copolyimides with different 20mol% of dianhydrides (6FDA, BPDA and BTDA) using m-cresol as a solvent, respectively. All synthesized copolyimides were characterized by NMR, FT-IR. The copolyimide gas permeability coefficients(P) and ideal selectivities for N2, O2, CO2 and CH4 were measured with a time-lag apparatus. |
| 저자 | 박채영, 장은총, 박희문, 장봉준, 김정훈 |
| 소속 | 한국화학(연) |
| 키워드 | |
| 원문파일 | 초록 보기 |
