Design and construction of homogeneous heterogeneity Co–Zn-ZIF-L membranes for efficient H_(2)/CO_(2)separationOA
Metal–organic framework(MOF)membranes have been extensively researched as an innovative membrane material for H_(2)/CO_(2)separation.The preparation of MOF membranes can be extended by constructing MOF membranes with homogeneous heterogeneous structure and the MOF membranes with high permeance and high selectivity can be prepared.Here,we use the chelation-assisted interfacial growth process to construct a seeding layer,and then prepare Co–Zn-ZIF-L membranes with a homogeneous heterogeneous structure by secondary growth for the efficient separation of H_(2)/CO_(2).The resulting Co–Zn-ZIF-L membranes show an H_(2)permeance of 2156 GPU and H_(2)/CO_(2)selectivity of 31.6 at 298 K and 1.0 bar,surpassing the Robeson upper bound(2008).Furthermore,the Co–Zn-ZIF-L membrane has a H_(2)/CO_(2)separation stability of 65 h and can efficiently separate to obtain pure H_(2).
Shenzhen Cong;Si Sun;Yijing Zhang;Ming Wang;Zhehua Jia;Jiaoyu Peng;Huan Pang
School of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225009,ChinaSchool of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225009,ChinaSchool of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225009,ChinaSchool of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225009,ChinaSchool of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225009,ChinaKey Laboratory of Green and High-end Utilization of Salt Lake Resources,Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining 810008,ChinaSchool of Chemistry and Chemical Engineering,Yangzhou University,Yangzhou,225009,China
化学化工
metal organic framework mof membranesmof membranesH CO separationconstructing mof membraneshomogeneous heterogeneous co zn zif l membraneschelation assisted interfacial growth processpermeancemembrane material
《Industrial Chemistry & Materials》 2026 (3)
P.334-341,8
financially supported by the Project for International Cooperation in Science and Technology,Qinghai Province(No.2024-HZ-804)the Yangzhou“Green Yang Jinfeng Plan”excellent doctor talent funding program and the Yangzhou University Startup Fund for Distinguished Scholars(137013525)。
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