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Separation Efficiency of CO2 in Ionic Liquids/Poly(vinylidene fluoride) Composite Membrane: A Molecular Dynamics Study

文献类型：期刊论文

作者Song, Tao2; Zhang, Xiaochun2; Li, Yonggang4; Jiang, Kun2,3; Zhang, Suojiang2; Cui, Xiangmei; Bai, Lu2
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期2019-04-24
卷号58期号:16页码:6887-6898
ISSN号0888-5885
DOI10.1021/acs.iecr.8b06100
英文摘要Ionic liquids (ILs)/polymer composite membranes show great potential for CO2 separation. The main challenge is to select the appropriate combination of ILs and polymer in a limited time and cost. In this work, the microstructure, interactions and dynamic properties of a series of systems of 1-butyl-3-methylimidazolium hexafluorophosphate abmim][PF6]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([bmim]-[Tf2N]) and 1-butyl-3-methylimidazolium tetracyanoborate abmim][B(CN)(4)] composited with poly(vinylidene fluoride) (PVDF) with increasing ionic liquids (ILs) content were studied by molecular dynamics simulations for understanding the composite membrane at the molecular level. The radial distribution functions show that ILs aggregation is formed in the PVDF matrix, and the aggregation region continuously expands and finally becomes ionic channels with increased ILs content to 50 wt %. The weakest cations-anions interaction of [bmim][B(CN)(4)] and the strongest interaction of PVDF-[B(CN)(4)] as well as the weakest aggregation of [bmim][B(CN)(4)] are favorable for forming the continuous ionic channels in PVDF matrix for CO, diffusion. The increased self-diffusion coefficients of PVDF after the addition of ILs, which originates from the strong interaction of ILs-PVDF and the broken hydrogen bond network among PVDF chains, facilitate the transportation of CO, among PVDF chains. Moreover, the free energy of solvation, Henry's law constant and self-diffusion coefficients for CO, in three ILs/PVDF systems suggest that [bmim][B(CN)(4)]/PVDF composite membrane possesses better CO2 separation performance.
WOS关键词GAS-TRANSPORT PROPERTIES ; LIQUID BASED MEMBRANES ; PARTICLE MESH EWALD ; CARBON-DIOXIDE ; GEL MEMBRANES ; FORCE-FIELD ; SIMULATION ; POLYMER ; HYDROGEN ; WATER
资助项目National Natural Science Foundation of China[51674234] ; National Natural Science Foundation of China[U1704251] ; National Natural Science Foundation of China[21606233] ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences[XDA 21030500]
WOS研究方向Engineering
语种英语
WOS记录号WOS:000466053500069
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; "Transformational Technologies for Clean Energy and Demonstration", Strategic Priority Research Program of the Chinese Academy of Sciences
源URL[http://ir.ipe.ac.cn/handle/122111/28229]  
专题中国科学院过程工程研究所
通讯作者Zhang, Xiaochun; Zhang, Suojiang; Cui, Xiangmei
作者单位1.Qinghai Univ, Coll Chem Engn, Xining 810016, Qinghai, Peoples R China
2.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing Key Lab Ion Liquids Clean Proc,CAS Key La, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Coll Chem & Engn, Beijing 100049, Peoples R China
4.Baise Univ, Coll Chem & Environm Engn, Baise 533000, Peoples R China
推荐引用方式
GB/T 7714		 Song, Tao,Zhang, Xiaochun,Li, Yonggang,et al. Separation Efficiency of CO2 in Ionic Liquids/Poly(vinylidene fluoride) Composite Membrane: A Molecular Dynamics Study[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(16):6887-6898.
APA Song, Tao.,Zhang, Xiaochun.,Li, Yonggang.,Jiang, Kun.,Zhang, Suojiang.,...&Bai, Lu.(2019).Separation Efficiency of CO2 in Ionic Liquids/Poly(vinylidene fluoride) Composite Membrane: A Molecular Dynamics Study.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(16),6887-6898.
MLA Song, Tao,et al."Separation Efficiency of CO2 in Ionic Liquids/Poly(vinylidene fluoride) Composite Membrane: A Molecular Dynamics Study".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.16(2019):6887-6898.

入库方式： OAI收割

来源：过程工程研究所

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