High pressure phase behaviour of methane in 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide

被引:70
作者
Raeissi, S. [2 ]
Peters, C. J. [1 ,3 ]
机构
[1] Delft Univ Technol, Fac Mech Maritime & Mat Engn, Dept Proc & Energy, Lab Proc Equipment, NL-2628 CA Delft, Netherlands
[2] Shiraz Univ, Sch Chem & Petr Engn, Shiraz 71345, Iran
[3] Petr Inst, Dept Chem Engn, Abu Dhabi, U Arab Emirates
关键词
Ionic liquid; Gas solubility; Phase equilibria; Vapour-liquid equilibria; Gas separation; Gas purification; Liquid membranes; bmim ][Tf2N; CH4; Alkane; IONIC LIQUID; CARBON-DIOXIDE; GAS SOLUBILITY; CO2; SEPARATION; HYDROGEN; EQUILIBRIA; MEMBRANES;
D O I
10.1016/j.fluid.2010.03.021
中图分类号
O414.1 [热力学];
学科分类号
摘要
Solubility data of methane in the ionic liquid 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide are presented within temperature and pressure ranges of 300-450 K and 1-16 MPa, respectively. Experiments were carried out in a view-cell based on the synthetic method. Results indicated rather low methane solubility in the ionic liquid, ranging from 3 up to 22 mole% at the higher pressure limit of 16 MPa. In comparison to some other gases of concern to ionic liquid gas purification membranes, methane had much lower solubility than carbon dioxide and higher solubility than hydrogen. Isothermal methane solubility was shown to increase with pressure in an almost linear manner. However, temperature effects were more predominant at low temperatures, i.e. increasing the temperature caused a more notable decrease in solubility at lower temperatures than at higher temperatures. Solubility results of methane are also compared to those of ethane, propane and butane in 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. Methane is by far less soluble than ethane, propane, and butane. (C) 2010 Published by Elsevier B.V.
引用
收藏
页码:67 / 71
页数:5
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