Membrane separation is an enviroranental benign technology for 21st century, and is developing quickly to replace the conventional distillation process. Carbon raolecular sieve membrane (CMSM) was synthesized through ...Membrane separation is an enviroranental benign technology for 21st century, and is developing quickly to replace the conventional distillation process. Carbon raolecular sieve membrane (CMSM) was synthesized through the contndled pyrolysis of polyimide films. The CMSM is synanetric in structure and presents strong sieving effect towards gas molecules of slightly different diameters. The microstructure of CMSM was manipulated through the thermal treatment program and further modified through activation vapor/chemical depositions. It is demonstrated that CMSM can be synthesized/modified for specific gas mixtures, such as O2/N2, CO2/CH4, C3H6/C3H8, and ect. The pore size distrilmfion, relationship between the permeance & selectivity on CMSM for the separation d some gas pairs was also investigated.展开更多
叙述了分子筛-聚合物共混制备气体分离膜的研究进展,包括不同类型的基体聚合物(橡胶态与玻璃态)与分子筛共混对分离膜渗透性能的影响、如何增强分子筛与聚合物膜材料相容性、共混膜选择分离皮层薄化等方面内容;并介绍了分子筛-聚合物共...叙述了分子筛-聚合物共混制备气体分离膜的研究进展,包括不同类型的基体聚合物(橡胶态与玻璃态)与分子筛共混对分离膜渗透性能的影响、如何增强分子筛与聚合物膜材料相容性、共混膜选择分离皮层薄化等方面内容;并介绍了分子筛-聚合物共混膜气体渗透机理的理论研究,包括促进吸附-扩散机理及分子筛分的Maxwell模型、Effective Medium Theo-ry模型机理等.展开更多
文摘Membrane separation is an enviroranental benign technology for 21st century, and is developing quickly to replace the conventional distillation process. Carbon raolecular sieve membrane (CMSM) was synthesized through the contndled pyrolysis of polyimide films. The CMSM is synanetric in structure and presents strong sieving effect towards gas molecules of slightly different diameters. The microstructure of CMSM was manipulated through the thermal treatment program and further modified through activation vapor/chemical depositions. It is demonstrated that CMSM can be synthesized/modified for specific gas mixtures, such as O2/N2, CO2/CH4, C3H6/C3H8, and ect. The pore size distrilmfion, relationship between the permeance & selectivity on CMSM for the separation d some gas pairs was also investigated.
文摘叙述了分子筛-聚合物共混制备气体分离膜的研究进展,包括不同类型的基体聚合物(橡胶态与玻璃态)与分子筛共混对分离膜渗透性能的影响、如何增强分子筛与聚合物膜材料相容性、共混膜选择分离皮层薄化等方面内容;并介绍了分子筛-聚合物共混膜气体渗透机理的理论研究,包括促进吸附-扩散机理及分子筛分的Maxwell模型、Effective Medium Theo-ry模型机理等.
