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AgBF4/emimBF4 supported ionic liquid membrane for carbon monoxide/nitrogen separation
Feng Shichao; Wu Yuanyuan; Luo Jianquan; Wan Yinhua
2019
Source PublicationJOURNAL OF ENERGY CHEMISTRY
ISSN2095-4956
Volume29Issue:2Pages:31
AbstractIn this paper, AgBF4/emimBF4 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 emimBF4 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.
KeywordBLEND MEMBRANES FACILITATED TRANSPORT COMPOSITE MEMBRANES GAS SOLUBILITY CO2 MONOXIDE AG+ Supported ionic liquid membranes emimBF4 AgBF4 Carbon monoxide separation
Language英语
Funding Project[National Natural Science Foundation of China]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/46781
Collection中国科学院过程工程研究所
Affiliation中国科学院过程工程研究所
First Author Affilication中国科学院过程工程研究所
Recommended Citation
GB/T 7714
Feng Shichao,Wu Yuanyuan,Luo Jianquan,et al. AgBF4/emimBF4 supported ionic liquid membrane for carbon monoxide/nitrogen separation[J]. JOURNAL OF ENERGY CHEMISTRY,2019,29(2):31.
APA Feng Shichao,Wu Yuanyuan,Luo Jianquan,&Wan Yinhua.(2019).AgBF4/emimBF4 supported ionic liquid membrane for carbon monoxide/nitrogen separation.JOURNAL OF ENERGY CHEMISTRY,29(2),31.
MLA Feng Shichao,et al."AgBF4/emimBF4 supported ionic liquid membrane for carbon monoxide/nitrogen separation".JOURNAL OF ENERGY CHEMISTRY 29.2(2019):31.
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