ZIF-L membrane with a membrane-interlocked-support composite architecture for H/CO separation

作     者：Kun Yang Sulei Hu Yujie Ban Yingwu Zhou Na Cao Meng Zhao Yifei Xiao Weixue Li Weishen Yang 杨昆;胡素磊;班宇杰;周应武;曹娜;赵萌;肖依非;李微雪;杨维慎

作者机构：State Key Laboratory of CatalysisDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China Hefei National Laboratory for Physical Sciences at the MicroscaleUniversity of Science and Technology of ChinaHefei 230026China University of Chinese Academy of SciencesBeijing 100039China Department of Chemical PhysicsSchool of Chemistry and Materials ScienceiCHeMChinese Academy of SciencesExcellence Center for NanoscienceUniversity of Science and Technology of ChinaHefei 230026China Dalian National Laboratory for Clean EnergyDalian 116023China 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2021年第66卷第18期

页      面：1869-1876,M0003,M0004页

核心收录：

学科分类：080706[工学-化工过程机械] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：supported by the National Natural Science Foundation of China(21978283,22090060,and 22090063) the Strategic Priority Research Program of Chinese Academy of Sciences(XDB17020400) Liaoning Revitalization Talents Program(XLYC1801004) the DNL Cooperation Fund,Chinese Academy of Sciences(DNL201920) Youth Innovation Promotion Association of Chinese Academy of Sciences,and Dalian Institute of Chemical Physics(DICP ZZBS201711) the financial support of National Key R&D Program of China(2018YFA0208603) K.C.Wong Education Foundation(GJTD-2020-15) 

主　　题：MOF membranes Membrane-interlocked-support composite architecture H_(2)/CO_(2)separation Interfacial assembly 

摘      要：Metal–organic framework(MOF)membranes hold great promise in energy-efficient chemical *** outstanding challenges of the microstructural design stem from(1)thinning of membranes to immensely reduce the mass-transfer resistance(for high permeances);(2)tuning of orientation to optimize the selective transport of gas molecules,and(3)reinforcement of intercrystalline structure to subside leakage through defective gaps(for high selectivity).Here,we propose the ZIF-L membrane that is completely confined into the voids of the alumina support through an interfacial assembly process,producing an appealing membrane-interlocked-support(MIS)composite architecture that meets the requirements of the microstructural design of MOF ***,the membranes show average H2 permeances of above 4000 GPU and H_(2)/CO_(2) separation factor(SF)of above 200,representing record-high separation performances of ZIF-L membranes and falling into the industrial target zone(H_(2) permeance1000 GPU and H_(2)/CO_(2) SF60).Furthermore,the ZIF-L membrane possessing the MIS composite architecture that is established with alumina particles as scaffolds shows mechanical stability,scraped repeatedly by a piece of silicon rubber causing no selectivity loss.