Hierarchically microporous membranes for highly energy-efficient gas separations  

作　　者：Shuangjiang Luo Tianliang Han Can Wang Ying Sun Hongjun Zhang Ruilan Guo Suojiang Zhang 

机构地区：[1]CAS Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Beijing Key Laboratory of Ionic Liquids Clean Process,Institute of Process Engineering,Chinese Academy of Sciences(CAS),Beijing 100190,China [2]State Key Laboratory of Particle Detection and Electronics,University of Science and Technology of China,Hefei 230026,China [3]Department of Chemical and Biomolecular Engineering,University of Notre Dame,Notre Dame,IN 46556,USA [4]Longzihu New Energy Laboratory,Zhengzhou 450000,China [5]Henan University,Jinming Road,Kaifeng,475004,China

出　　处：《Industrial Chemistry & Materials》2023年第3期376-387,共12页工业化学与材料（英文）

基　　金：S.Luo and S.Zhang gratefully acknowledge the financial support from the National Natural Science Foundation of China(22008243,22090063,21890760);the International Partner Program of CAS(122111KYSB20200035);the Project of Stable Support for Youth Team in Basic Research Field of CAS(YSBR-017).R.Guo acknowledges the financial support from the Division of Chemical Sciences,Biosciences,and Geosciences,Office of Basic Energy Sciences of the U.S.Department of Energy(DOE),under award no.DE-SC0019024;from the U.S.National Science Foundation under Cooperative Agreement No.EEC-1647722。

摘　　要：The implementation of synthetic polymer membranes in gas separations,ranging from natural gas sweetening,hydrogen separation,helium recovery,carbon capture,oxygen/nitrogen enrichment,etc.,has stimulated the vigorous development of high-performance membrane materials.However,size-sieving types of synthetic polymer membranes are frequently subject to a trade-off between permeability and selectivity,primarily due to the lack of ability to boost fractional free volume while simultaneously controlling the micropore size distribution.Herein,we review recent research progress on microporosity manipulation in high-free-volume polymeric gas separation membranes and their gas separation performance,with an emphasis on membranes with hourglass-shaped or bimodally distributed microcavities.State-of-the-art strategies to construct tailorable and hierarchically microporous structures,microporosity characterization,and microcavity architecture that govern gas separation performance are systematically summarized.

关 键 词：Gas separation membranes Hierarchical microporosity Micropore size distribution Configurational free volume Solution-diffusion mechanism 

分 类 号：O64[理学—物理化学]