摘要
以酚醛树脂为原料制备了炭支撑膜和炭－炭复合膜，研究了其气体分离性能。结果表明：炭支撑膜分离气体和机理包括努森扩散和粘性流；采用浸涂－干燥－炭化的工艺制备的炭－炭复合膜对Ｈ２／ＣＯ２具有较好的分离性能，Ｈ２／ＣＯ２分离系数达５．６，大于理想努森扩散的分离系数３．７。但在高压差时复合膜上ＣＯ２的表面扩散增强，使Ｈ２／ＣＯ２分离系数下降。
Abstract: Carbon supported membrane and carbon-carbon composite membrane were prepared from phenol-formaldehyde resin and their gas separation properties were investigated. It was shown that gas separation mechanismoon carbon supported membrane included KNUDSEN diffusion and viscous flow and that carbon-carbon composite membrane prepared by dip-coating-drying-carbonization process having high separating property for H2/CO2, wich factor was 5. 6 and greater than that of ideal KNUDSEN diffusion 3.7. When high differential pressure was used, CO2 with surface diffusion was increased and H2/CO2 separation factor was decreased.
出处
《炭素》
1996年第4期23-27,共5页
Carbon
