Th-MOF showing six-fold imide-sealed pockets for middle-sizeseparation of propane from natural gas

作     者：Li Wang Wenhui Zhang Jie Ding Lele Gong Rajamani Krishna Youyuan Ran Lan Chen Feng Luo Li Wang;Wenhui Zhang;Jie Ding;Lele Gong;Rajamani Krishna;Youyuan Ran;Lan Chen;Feng Luo

作者机构：Jiangxi Province Key Laboratory of Synthetic ChemistrySchool of ChemistryBiology and Material ScienceEast China University of TechnologyNanchang 330013China Van’t Hoff Institute for Molecular SciencesUniversity of AmsterdamScience Park 9041098 XH AmsterdamThe Netherlands 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2023年第16卷第2期

页      面：3287-3293页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Fund of Jiangxi Province Key Laboratory of Synthetic Chemistry(No.JXSC202007) the Foundation of Jiangxi Educational Committee(No.GJJ200734) the Doctoral Scientific Research Start-up Foundation of East China University of Technology(No.DHBK2018044) the National Natural Science Foundation of China(Nos.21966002 and 21871047) the Training Program for Academic and Technical Leaders of Major Disciplines in Jiangxi Province(No.20194BCJ22010) the Fuzhou Youth Leading Talent Project(No.2020ED64) the Provincial College Students Innovation and Entrepreneurship Training Program(No.S202110405026) 

主　　题：Th-metal-organic framework(MOF) intermediate-size-separation natural gas selectivity 

摘      要：Separation of propane from natural gas is of great importance to ***,in light of size-based separation,there still lacks effective method to directly separate propane from natural gas,due to the comparable physical properties for these light alkanes(C1–C4)and the middle size of *** this work,we found that a new Th-metal-organic framework(MOF)could be an ideal solution for this *** Th-MOF takes UiO-66-type structure,but with the pocket sealed by six-fold imide groups;this not only precisely reduces the size of pocket to exactly match propane,but also enhances the host–guest interactions through multiple(C)H(^(δ+))∙∙∙(^(δ−))O(C)*** a result,highly selective adsorption of propane over methane,ethane,and butane was observed,implying unique middle-size *** actual separation was confirmed by breakthrough experiments of simulated natural gas,confirming its superior application in direct separation of propane from natural *** separation mechanism,as unveiled by both theoretical calculation and comparative experiments,is due to the six-fold imide-sealed pocket that could effectively distinguish propane from other light alkanes through both size effect and host–guest interactions.