article
Solubility of CO<sub>2</sub> in a Choline Chloride + Urea Eutectic Mixture
Journal of Chemical & Engineering Data · 2008 · Vol. 53(2) · pp. 548–550
Xiaoyong Li✉(Chinese Academy of Sciences)Minqiang Hou(Institute of Chemistry)Buxing Han(Institute of Chemistry)Wang Xiao-ling(China University of Mining and Technology)Lizhuang Zou(Institute of Chemistry)
Abstract
The solubility of CO2 in choline chloride + urea eutectic mixtures was determined at 313.15 K, 323.15 K, and 333.15 K under pressures up to 13 MPa. The mole ratios of choline chloride to urea selected were 1:1.5, 1:2, and 1:2.5. The Henry’s constants and enthalpy of solution of the gas were calculated from the solubility data. The solubility of CO2 in the mixtures increased with increasing pressure, and the solubility is more sensitive to pressure in the low-pressure range. The solubility of CO2 in the mixtures decreased with increasing temperature at all the pressures. The enthalpy of solution is negative at all conditions.
Ionic liquids properties and applicationsPhase Equilibria and ThermodynamicsCarbon Dioxide Capture TechnologiesCholine chlorideSolubilityChemistryEnthalpyEutectic systemUreaEnthalpy change of solutionInorganic chemistryChlorideMolar solubility
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397
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1.29
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18
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73%
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References
Novel solvent properties of choline chloride/urea mixturesElectronic supplementary information (ESI) available: spectroscopic data. See http://www.rsc.org/suppdata/cc/b2/b210714g/
Chemical Communications · 2002 · 5,302 citations
Solubility of CO<sub>2</sub> in the Ionic Liquid [bmim][PF<sub>6</sub>]
Journal of Chemical & Engineering Data · 2003 · 395 citations
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