Carbon dioxide solubility in 1-hexyl-3-methylimidazolium bis(trifluormethylsulfonyl)imide in a wide range of temperatures and pressures.

Solubility measurement data of carbon dioxide (CO2) in the ionic liquid 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide [HMIM][NTf2] at T = 273.15-413.15 K and pressures up to p = 4.5 MPa using an isochoric method in decrements of ΔT = 20 K are presented. The temperature dependency of the Henry's law constant was calculated, and the average deviation of the Henry's law constant is always better than ±1%. Thermodynamic properties of solution such as the free energy of solvation, the enthalpy of solvation, the entropy of solvation, and the heat capacity of solvation were calculated to evaluate the solute-solvent molecular interactions.

[1]  E. Hassel,et al.  Carbon dioxide solubility in 1-butyl-3-methylimidazolium-bis(trifluormethylsulfonyl)imide over a wide range of temperatures and pressures , 2013 .

[2]  T. Schiestel,et al.  Gas solubilities in room temperature ionic liquids – Correlation between RTiL-molar mass and Henry's law constant , 2011 .

[3]  Y. Shimoyama,et al.  Predictions of cation and anion effects on solubilities, selectivities and permeabilities for CO2 in ionic liquid using COSMO based activity coefficient model , 2010 .

[4]  Xiaoyan Ji,et al.  Thermodynamic modeling of CO2 solubility in ionic liquid with heterosegmented statistical associating fluid theory , 2010 .

[5]  W. Shi,et al.  Molecular simulations and experimental studies of solubility and diffusivity for pure and mixed gases of H2, CO2, and Ar absorbed in the ionic liquid 1-n-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide ([hmim][Tf2N]). , 2010, The journal of physical chemistry. B.

[6]  J. Kang,et al.  High-pressure phase behavior of binary and ternary mixtures containing ionic liquid [C6-mim][Tf2N], dimethyl carbonate and carbon dioxide , 2010 .

[7]  Aaron M. Scurto,et al.  High-pressure phase equilibria of {carbon dioxide (CO2) + n-alkyl-imidazolium bis(trifluoromethylsulfonyl)amide} ionic liquids , 2010 .

[8]  D. Paschek,et al.  Temperature dependence of the solubility of carbon dioxide in imidazolium-based ionic liquids. , 2009, The journal of physical chemistry. B.

[9]  Cj Cor Peters,et al.  A potential ionic liquid for CO2-separating gas membranes: selection and gas solubility studies , 2009 .

[10]  J. Andreu,et al.  Modeling the solubility behavior of CO(2), H(2), and Xe in [C(n)-mim][Tf(2)N] ionic liquids. , 2008, The journal of physical chemistry. B.

[11]  Thomas Foo,et al.  Physical and chemical absorptions of carbon dioxide in room-temperature ionic liquids. , 2008, The journal of physical chemistry. B.

[12]  Byung-chul Lee,et al.  High-pressure solubilities of carbon dioxide in ionic liquids: 1-Alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide , 2008 .

[13]  Jason E. Bara,et al.  Room-Temperature Ionic Liquids: Temperature Dependence of Gas Solubility Selectivity , 2008 .

[14]  Paul Scovazzo,et al.  Correlations of Low-Pressure Carbon Dioxide and Hydrocarbon Solubilities in Imidazolium-, Phosphonium-, and Ammonium-Based Room-Temperature Ionic Liquids. Part 2. Using Activation Energy of Viscosity , 2008 .

[15]  Joan F Brennecke,et al.  Solubility of CO2, CH4, C2H6, C2H4, O2, and N2 in 1-hexyl-3-methylpyridinium bis(trifluoromethylsulfonyl)imide: comparison to other ionic liquids. , 2007, Accounts of chemical research.

[16]  J. Brennecke,et al.  Improving carbon dioxide solubility in ionic liquids. , 2007, The journal of physical chemistry. B.

[17]  J. Brennecke,et al.  Characterization of the ability of CO2 to act as an antisolvent for ionic liquid/organic mixtures. , 2007, The journal of physical chemistry. B.

[18]  M. Gomes.  Low-Pressure Solubility and Thermodynamics of Solvation of Carbon Dioxide, Ethane, and Hydrogen in 1-Hexyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)amide between Temperatures of 283 K and 343 K , 2007 .

[19]  M. Shiflett,et al.  Solubility of CO2 in room temperature ionic liquid [hmim][Tf2N]. , 2007, The journal of physical chemistry. B.

[20]  G. Maurer,et al.  Solubility of CO2 in the ionic liquid [hmim][Tf2N] , 2006 .

[21]  K. Yoo,et al.  Solubility measurement and prediction of carbon dioxide in ionic liquids , 2005 .

[22]  J. Brennecke,et al.  High-Pressure Phase Behavior of Carbon Dioxide with Imidazolium-Based Ionic Liquids , 2004 .

[23]  G. Maurer,et al.  Solubility of CO2 in the Ionic Liquid [bmim][PF6] , 2003 .

[24]  Joan F. Brennecke,et al.  Solubilities and Thermodynamic Properties of Gases in the Ionic Liquid 1-n-Butyl-3-methylimidazolium Hexafluorophosphate , 2002 .

[25]  A. Forghani,et al.  Thermodynamic modeling of CO2 solubility in ionic liquid ([Cn-mim] [Tf2N]; n=2, 4, 6, 8) with using Wong-Sandler mixing rule, Peng-Rabinson equation of state (EOS) and differential evolution (DE) method , 2011 .

[26]  Sheng Dai,et al.  Low-Pressure Solubility of Carbon Dioxide in Room-Temperature Ionic Liquids Measured with a Quartz Crystal Microbalance , 2004 .