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Separation of diverse alkenes from C-2-C-4 alkanes through nanoporous graphene membranes via local size sieving
Xu, Yinxiang1,2,3; Xu, Junbo3; Yang, Chao1,3,4
2019-08-15
Source PublicationJOURNAL OF MEMBRANE SCIENCE
ISSN0376-7388
Volume584Pages:227-235
AbstractCompared with the specialized membrane applied to separate one type of mixture, the membranes that are able to selectively separate diverse alkane/alkene mixtures are more valuable in chemical and petroleum industry. Herein, we explored nine nanoporous graphene (NG) membranes including three basic pores and six expanded pores, which exhibit excellent permeance and ultrahigh selectivity for C2H4, C3H6 and C-4 H-6 over the corresponding alkanes. From the thermodynamic and dynamic insights, the local size sieving and competitive adsorption mechanisms play the crucial role in capturing alkenes but rejecting alkanes. The flat alkenyl blocks are smaller than the alkyl blocks, which is beneficial for alkenes to access and cross the confined pores. The above conclusions are further applicable for multilayer NG membranes with the one-dimensional channel. We anticipate our results of expanding pores with higher permeability while maintaining the selectivity can provide a valuable guidance for experimenters to fabricate effective nanopores with a certain tolerance in the future.
KeywordAlkane/alkene separation Local size sieving Competitive adsorption Nanoporous graphene membrane
DOI10.1016/j.memsci.2019.05.005
Language英语
WOS KeywordMETAL-ORGANIC FRAMEWORK ; MOLECULAR-DYNAMICS ; MIXED MATRIX ; CO2 ; SIMULATIONS ; CH4 ; ADSORPTION ; ULTRATHIN ; METHANE
Funding ProjectNational Key R&D Program of China[2016YFB0301702] ; National Natural Science Foundation of China[21490584] ; National Natural Science Foundation of China[91534105] ; National Natural Science Foundation of China[51808362] ; National Natural Science Foundation of China[21878298] ; Key Research Program of Frontier Sciences of CAS[QYZDJ-SSW-JSC030] ; Youth Innovation Research Project of Science and Technology Department in Sichuan[2017TD0027] ; Innovative Research Platform of Sichuan Development and Reform Commission[2016-298]
WOS Research AreaEngineering ; Polymer Science
WOS SubjectEngineering, Chemical ; Polymer Science
Funding OrganizationNational Key R&D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences of CAS ; Youth Innovation Research Project of Science and Technology Department in Sichuan ; Innovative Research Platform of Sichuan Development and Reform Commission
WOS IDWOS:000468599500020
PublisherELSEVIER SCIENCE BV
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/29783
Corresponding AuthorXu, Junbo; Yang, Chao
Affiliation1.Beihang Univ, Sch Space & Environm, Beijing 100191, Peoples R China
2.Sichuan Univ Sci & Engn, Coll Mech Engn, Zigong 643000, Sichuan, Peoples R China
3.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
4.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Xu, Yinxiang,Xu, Junbo,Yang, Chao. Separation of diverse alkenes from C-2-C-4 alkanes through nanoporous graphene membranes via local size sieving[J]. JOURNAL OF MEMBRANE SCIENCE,2019,584:227-235.
APA Xu, Yinxiang,Xu, Junbo,&Yang, Chao.(2019).Separation of diverse alkenes from C-2-C-4 alkanes through nanoporous graphene membranes via local size sieving.JOURNAL OF MEMBRANE SCIENCE,584,227-235.
MLA Xu, Yinxiang,et al."Separation of diverse alkenes from C-2-C-4 alkanes through nanoporous graphene membranes via local size sieving".JOURNAL OF MEMBRANE SCIENCE 584(2019):227-235.
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