Direct imaging and mechanism study of C_(6)α-olefin adsorption on faujasite and Linde Type A zeolites

作     者：Ruihan Yang Xiao Chen Junxiang Ma Yuan Gao Yujun Wang Guangsheng Luo Ruihan Yang;Xiao Chen;Junxiang Ma;Yuan Gao;Yujun Wang;Guangsheng Luo

作者机构：State Key Lab of Chemical EngineeringDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Beijing Key Laboratory of Green Chemical Reaction Engineering and TechnologyDepartment of Chemical EngineeringTsinghua UniversityBeijing 100084China Lu’an Chemical Group CO.LTD.Changzhi046299China 

出 版 物：《Nano Research》 (纳米研究（英文版）)

年 卷 期：2022年第15卷第6期

页      面：5322-5330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] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.21991102 and 21878169) Key Technologies Research and Development Program of China(No.2019YFA0905100) Tsinghua University Initiative Scientific Research Program(No.2018Z05JZY010) 

主　　题：electron microscopy host-guest interactions adsorption separation α-olefins zeolites 

摘      要：Linearα-olefins are important chemical raw *** purifyα-olefins from a high-temperature Fischer–Tropsch synthetic oil,it is necessary to separate theα-olefins from the paraffins,which is *** separation by zeolites is a promising alternative to energy-intensive distillation forα-olefin/paraffin *** integrated differential phase-contrast scanning transmission electron microscopy(iDPC-STEM)technique is used in combination with density functional theory(DFT)simulations and batch adsorption experiments to study the adsorption behavior of C_(6)α-olefins and the mechanism of selective adsorption of C_(6)α-olefin/*** electron microscopy real-space imaging of the atomic frameworks of the faujasite(FAU)and Linde Type A(LTA)zeolites and the C_(6)α-olefin-adsorption positions on their lattices is achieved through *** images provide direct evidence that C_(6)α-olefins preferentially adsorb at the edges of the FAU and LTA zeolite *** calculations further reveal the relationship between host–guest interactions and different molecular *** and experimental results also show that the presence of calcium cations can enhance the selectivity of zeolites forα-olefin/paraffin *** work provides a means to investigate the behavior of guest molecules and the host–guest interactions in the adsorption or catalytic process of nanoporous materials.