High-pressure solubility of carbon dioxide in imidazolium-based ionic liquids with anions [PF6] and [BF4]

被引：0
作者：
Bang-Hyun Lim
Woo-Hyuk Choe
Jae-Jin Shim
Choon Sup Ra
Dirk Tuma
Heun Lee
Chul Soo Lee
机构：
[1] Yeungnam University,School of Display and Chemical Engineering
[2] Yeungnam University,Department of Chemistry
[3] BAM Federal Institute of Materials Research and Testing,Department of Chemical and Biochemical Engineering
[4] Korea Advanced Institute of Science and Technology (KAIST),Department of Chemical and Biological Engineering
[5] Korea University,undefined
来源：
Korean Journal of Chemical Engineering | 2009年 / 26卷
关键词：
Solubility; Carbon Dioxide; Ionic Liquid; Water Content; Anion; Cation;
D O I：
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中图分类号：
学科分类号：
摘要：
The solubility of carbon dioxide in three ionic liquids (ILs) under supercritical fluid condition was measured at pressures up to 32 MPa and at temperatures of 313.15, 323.15, and 333.15 K in a high-pressure view cell. The imidazolium-derivative ionic liquids 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim][PF6]), 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]), and 1-octyl-3-methylimidazolium tetrafluoroborate ([omim][BF4]) were employed in this research. The effects of pressure, temperature, nature of anion and cation as well as the water content on the solubility of CO2 in the ILs were investigated experimentally. The solubility of CO2 in the IL was higher for the ILs with longer cationic alkyl group and for the ILs with lower anion polarity. The lower the water content or the lower the temperature as well as the higher the pressure, the higher was the solubility of CO2.
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页码：1130 / 1136
页数：6
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