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    徐琴琴

    • 副教授     博士生导师   硕士生导师
    • 性别:女
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:化工学院
    • 学科:化工过程机械. 流体机械及工程. 安全科学与工程
    • 办公地点:西部校区H315
    • 联系方式:qinqinxu@dlut.edu.cn
    • 电子邮箱:qinqinxu@dlut.edu.cn

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    Preparation of supported ionic liquid membranes using supercritical fluid deposition based on gamma-alumina membrane and imidazolium ionic liquids

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    论文类型:期刊论文

    第一作者:Liu, Yi-Fan

    通讯作者:Xu, QQ; Yin, JZ (reprint author), Dalian Univ Technol, Sch Chem Machinery & Safety Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China.

    合写作者:Xu, Qin-Qin,Wang, Yu-Qing,Zhen, Meng-Yuan,Yin, Jian-Zhong

    发表时间:2018-09-01

    发表刊物:JOURNAL OF SUPERCRITICAL FLUIDS

    收录刊物:SCIE

    卷号:139

    页面范围:88-96

    ISSN号:0896-8446

    关键字:Supercritical fluid deposition (SCFD); Supported ionic liquid membranes (SILMs); Controllable preparation; CO2 capture; Capillary phase transition

    摘要:Supported ionic liquid membranes (SILMs) based on homemade asymmetric gamma-Al2O3 membranes and [BMIM] [BF4]/[BMIM][Ac] were prepared using supercritical fluid deposition (SCFD). Most of the micro- and me in the top layer of supports were blocked by ILs, while the macro-pores in the substrate (alpha-Al2O3) were partly filled. The [BMIM] [BF4]-SILMs exhibited CO2 permeance (Pa-CO2) of similar to 1.5 GPU and CO2/N-2 selectivity (alpha(CO2/N2)) of similar to 43.0, while the [BMIM] [Ac]-SILMs exhibited Pa-CO2 of similar to 0.7 GPU and alpha(CO2/N2) of similar to 44.0. It was found that deposition time, IL and co-solvent amount can influence the deposition process significantly. It was also found that the gas permeance decreased first and then maintained stable as deposition time or IL amount increased, but the SILM performance increased first and then decreased as the co-solvent amount increased. At last, the formation process of the liquid membrane was discussed by analyzing the phase behavior of scCO(2)-ethanol-IL systems.