论文部分内容阅读
据《炭素》1996年第4期梁长海等报道:以酚醛树脂为原料制备了炭支撑膜和炭一炭复合膜,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-干操-炭化的工艺制备的炭一炭复合膜对H_2/CO_2具有较好的分离性能,H_2/CO_2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CO_2的表面扩散增强,使H_2/CO_2
According to “Carbon” No. 4, 1996, Liang Changhai et al. Reported that a carbon support membrane and a carbon-carbon composite membrane were prepared by using phenolic resin as raw material, and its gas separation performance was studied. The results show that the separation gas and mechanism of carbon support film include Knudsen diffusion and viscous flow. The carbon-carbon composite membrane prepared by dip-coating-dry-carbonization process has good separation performance for H 2 / CO 2 and H 2 / CO 2 separation The coefficients are up to 5,6, which is greater than the separation factor of 3.7 for the ideal Nozsperson diffusion. However, the surface diffusion of CO 2 on the composite membrane increases with the high pressure drop, which makes H 2 / CO 2