AgBF4/[emim][BF4] supported ionic liquid membrane for carbon monoxide/nitrogen separation
Feng, Shichao; Wu, Yuanyuan; Luo, Jianquan; Wan, Yinhua

In this paper, AgBF4/[emim][BF4] supported ionic liquid membranes (SILMs) were prepared successfully for CO/N-2 separation using nitrogen pressure immobilization procedures. The incorporation of AgBF4 could decrease membrane weight loss, improve the pressure-resistant ability, and keep the critical pressure (0.45 MPa) of the SILMs. The high viscosity and undissolved AgBF4 solids in membrane liquid would disturb gas molecular transport through membrane and give rise to the gas transport resistance. Therefore, the gas permeability decreased remarkably with increasing AgBF4 carrier content in the membrane. When the molar ratio of AgBF4 to [emim][BF4] increased from 0:1 to 0.3:1, the CO/N-2 selectivity of the SILMs showed a great increase from similar to 1 to similar to 9 at 20 degrees C and 0.4MPa, suggesting that AgBF4 was an effective carrier for CO facilitated transport. The permeabilities of N-2 and CO increased at higher transmembrane pressure, indicating that molecular transport would dominate the transport process at high pressure. The temperature-dependent gas permeability followed the Arrhenius equation. Moreover, the differences between the activation energies of CO and N-2 became larger after introducing AgBF4, resulting in more obvious decrease in the CO/N-2 selectivity at higher operating temperature. (C) 2018 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier By, and Science Press. All rights reserved.

KeywordSupported Ionic Liquid Membranes [Emim][Bf4] Agbf4 Carbon Monoxide Separation
WOS KeywordBlend Membranes ; Facilitated Transport ; Composite Membranes ; Gas Solubility ; Co2 ; Monoxide ; Ag++
Funding ProjectNational Natural Science Foundation of China[21406235]
WOS Research AreaChemistry ; Energy & Fuels ; Engineering
WOS SubjectChemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China
WOS IDWOS:000451732100006
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Document Type期刊论文
Corresponding AuthorWan, Yinhua
AffiliationChinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Feng, Shichao,Wu, Yuanyuan,Luo, Jianquan,et al. AgBF4/[emim][BF4] supported ionic liquid membrane for carbon monoxide/nitrogen separation[J]. JOURNAL OF ENERGY CHEMISTRY,2019,29:31-39.
APA Feng, Shichao,Wu, Yuanyuan,Luo, Jianquan,&Wan, Yinhua.(2019).AgBF4/[emim][BF4] supported ionic liquid membrane for carbon monoxide/nitrogen separation.JOURNAL OF ENERGY CHEMISTRY,29,31-39.
MLA Feng, Shichao,et al."AgBF4/[emim][BF4] supported ionic liquid membrane for carbon monoxide/nitrogen separation".JOURNAL OF ENERGY CHEMISTRY 29(2019):31-39.
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