Covalent organic framework shows high isobutene adsorption selectivity from C_(4) hydrocarbons:Mechanism of interpenetration isomerism and pedal motion  

作　　者：Wei Chen Mian Li Wen-Li Peng Ling Huang Chao Zhao Dinesh Acharya Wentao Liu Anmin Zheng 

机构地区：[1]State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics,National Center for Magnetic Resonance in Wuhan,Key Laboratory of Magnetic Resonance in Biological Systems,Wuhan Institute of Physics and Mathematics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan,430071,China [2]Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province,Shantou University,Guangdong,515063,China [3]Chemistry and Chemical Engineering Guangdong Laboratory,Shantou,515031,China [4]Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan,430074,China [5]School of Materials Science and Engineering,Zhengzhou University,Zhengzhou,Henan,450001,China [6]University of Chinese Academy of Sciences,Beijing,100049,China

出　　处：《Green Energy & Environment》2022年第2期296-306,共11页绿色能源与环境（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.22002174,21802164,21902180 and U1832148);Natural Science Foundation of Hubei Province of China(2018CFA009);Key Research Program of Frontier Sciences,CAS(No.QYZDB-SSW-SLH026);China Postdoctoral Science Foundation(2019M662753)。

摘　　要：Adsorption and separation of C_(4) hydrocarbons are crucial steps in petrochemical processes.Employment of porous materials for enhancing the separation efficiency have paid much attention.Covalent-organic frameworks of diamond-topology,dia-COFs,often exhibit unique structural properties such as interpenetration isomerism and pedal motion.Herein,in order to get a deep insight into the structure-performance correlation of such dia-COFs,a series of dia-COF materials have been proposed and theoretically investigated on the C_(4) separation.It is found that these dia-COFs display an excellent adsorption and separation property towards isobutene with respect to other C_(4) hydrocarbons(i.e.,1,3-butadiene,1-butene,2-cis-butene,2-trans-butene,isobutane and n-butane).What’s more,the correlation between the topology parameters and experimental synthesis feasibility has been established for COF-300(dia-cN),and the unreported COF-300(dia-c3) is predicted to be experimentally feasible synthesized.Our findings not only provide a deep insight into the mechanism of topology characteristics of dia-COFs on C_(4) adsorption and separation properties but also guide the design and synthesis of novel highly-effective porous materials.

关 键 词：ADSORPTION hydrocarbons separation 

分 类 号：TQ221.213[化学工程—有机化工] O647.3[理学—物理化学]