Efficient Splitting of Trans-/Cis-Olefins Using an Anion-Pillared Ultramicroporous Metal-Organic Framework with Guest-Adaptive Pore Channels

作     者：Zhaoqiang Zhang Xili Cui Xiaoming Jiang Qi Ding Jiyu Cui Yuanbin Zhang Youssef Belmabkhout Karim Adil Mohamed Eddaoudi Huabin Xing Zhaoqiang Zhang;Xili Cui;Xiaoming Jiang;Qi Ding;Jiyu Cui;Yuanbin Zhang;Youssef Belmabkhout;Karim Adil;Mohamed Eddaoudi;Huabin Xing

作者机构：Key Laboratory of Biomass Chemical Engineering of Ministry of EducationCollege of Chemical and Biological EngineeringZhejiang UniversityHangzhou 310027China State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Advanced Membranes and Porous Materials CenterKing Abdullah University of Science and TechnologyThuwal 23955Saudi Arabia 

出 版 物：《Engineering》 (工程（英文）)

年 卷 期：2022年第8卷第4期

页      面：80-86页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China (LZ18B060001) the National Natural Science Foundation of China (21725603, 21476192, and U1862110) 

主　　题：Adsorption and separation Trans-/cis-butene Ultramicroporous metal-organic frameworks Pore engineering Guest-adaptive 

摘      要：Trans-/cis-olefin isomers play a vital role in the petrochemical *** paucity of energy-efficient technologies for their splitting is mainly due to the similarities of their physicochemical ***,two new tailor-made anion-pillared ultramicroporous metal–organic frameworks(MOFs),ZU-36-Ni and ZU-36-Fe(GeFSIX-3-Ni and GeFSIX-3-Fe)are reported for the first time for the efficient trans-/cis-2-butene(trans-/cis-C_(4)H_(8))mixture splitting by enhanced molecular ***,ZU-36-Ni unexpectedly exhibited smart guest-adaptive pore channels for trapping trans-C_(4)H_(8)with a remarkable adsorption capacity(2.45 mmol∙g^(−1))while effectively rejecting cis-C_(4)H_(8)with a high purity of 99.99%.The dispersion-corrected density functional theory(DFT-D)calculation suggested that the guest-adaptive behavior of ZU-36-Ni in response to trans-C_(4)H_(8)is derived from the organic linker rotation and the optimal pore dimensions,which not only improve the favorable adsorption/diffusion of trans-C_(4)H_(8)with optimal host–guest interactions,but also enhance the size-exclusion of cis-C_(4)H_(8).This work opens a new avenue for pore engineering in advanced smart or adaptive porous materials for specific applications involving guest molecular recognition.