Effect of acetonitrile on the solubility of carbon dioxide in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide

G. Hong, Johan Jacquemin, P. Husson, M.F.C. Gomes, Maggel Deetlefs, Mark Nieuwenhuyzen, O. Sheppard, Christopher Hardacre

Research output: Contribution to journalArticle

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Abstract

The effect of the addition of acetonitrile on the solubility of carbon dioxide in an ionic liquid, the 1-ethyl-3- methylimidazolium bis(trifluoromethanesulfonyl)amide, [C(2)mim][NTf2], was studied experimentally at pressures close to atmospheric and as a function of temperature between 290 and 335 K. It was observed that the solubility of carbon dioxide decreases linearly with the mole fraction of acetonitrile from a value of 2.6 x 10(-2) in the pure ionic liquid at 303 K to a mole fraction of 1.3 x 10(-2) in the mixture [C(2)mim][NTf2] + CH3CN with x(CH3CN) = 0.77 at the same temperature. The gas solubility decreases with temperature, and the thermodynamic properties of solvation could be calculated. The vapor pressures of the [ C2mim][ NTf2] + CH3CN mixtures were measured in the same temperature range, and strong negative deviations from Raoult's law were obtained: up to 36% for a mixture with x(CH3CN) = 0.46 at 334 K. Negative excess molar volumes of approximately -1 cm(3) mol(-1) at equimolar composition could also be calculated from density measurements of the pure components and of the mixtures. These observations are confirmed by neutron diffraction studies and are compatible with the existence of strong ion-dipole interactions in the mixed liquid solvent.
Original languageEnglish
Pages (from-to)8180-8188
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume45
Issue number24
DOIs
Publication statusPublished - 22 Nov 2006

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Acetonitrile
Amides
Carbon Dioxide
Carbon dioxide
solubility
Solubility
carbon dioxide
Ionic Liquids
Ionic liquids
temperature
neutron diffraction
Temperature
thermodynamic property
Solvation
Neutron diffraction
Vapor pressure
vapor pressure
Density (specific gravity)
Thermodynamic properties
Gases

Cite this

Hong, G., Jacquemin, J., Husson, P., Gomes, M. F. C., Deetlefs, M., Nieuwenhuyzen, M., ... Hardacre, C. (2006). Effect of acetonitrile on the solubility of carbon dioxide in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide. Industrial and Engineering Chemistry Research, 45(24), 8180-8188. https://doi.org/10.1021/ie0605377
Hong, G. ; Jacquemin, Johan ; Husson, P. ; Gomes, M.F.C. ; Deetlefs, Maggel ; Nieuwenhuyzen, Mark ; Sheppard, O. ; Hardacre, Christopher. / Effect of acetonitrile on the solubility of carbon dioxide in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide. In: Industrial and Engineering Chemistry Research. 2006 ; Vol. 45, No. 24. pp. 8180-8188.
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abstract = "The effect of the addition of acetonitrile on the solubility of carbon dioxide in an ionic liquid, the 1-ethyl-3- methylimidazolium bis(trifluoromethanesulfonyl)amide, [C(2)mim][NTf2], was studied experimentally at pressures close to atmospheric and as a function of temperature between 290 and 335 K. It was observed that the solubility of carbon dioxide decreases linearly with the mole fraction of acetonitrile from a value of 2.6 x 10(-2) in the pure ionic liquid at 303 K to a mole fraction of 1.3 x 10(-2) in the mixture [C(2)mim][NTf2] + CH3CN with x(CH3CN) = 0.77 at the same temperature. The gas solubility decreases with temperature, and the thermodynamic properties of solvation could be calculated. The vapor pressures of the [ C2mim][ NTf2] + CH3CN mixtures were measured in the same temperature range, and strong negative deviations from Raoult's law were obtained: up to 36{\%} for a mixture with x(CH3CN) = 0.46 at 334 K. Negative excess molar volumes of approximately -1 cm(3) mol(-1) at equimolar composition could also be calculated from density measurements of the pure components and of the mixtures. These observations are confirmed by neutron diffraction studies and are compatible with the existence of strong ion-dipole interactions in the mixed liquid solvent.",
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Hong, G, Jacquemin, J, Husson, P, Gomes, MFC, Deetlefs, M, Nieuwenhuyzen, M, Sheppard, O & Hardacre, C 2006, 'Effect of acetonitrile on the solubility of carbon dioxide in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide', Industrial and Engineering Chemistry Research, vol. 45, no. 24, pp. 8180-8188. https://doi.org/10.1021/ie0605377

Effect of acetonitrile on the solubility of carbon dioxide in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide. / Hong, G.; Jacquemin, Johan; Husson, P.; Gomes, M.F.C.; Deetlefs, Maggel; Nieuwenhuyzen, Mark; Sheppard, O.; Hardacre, Christopher.

In: Industrial and Engineering Chemistry Research, Vol. 45, No. 24, 22.11.2006, p. 8180-8188.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of acetonitrile on the solubility of carbon dioxide in 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl) amide

AU - Hong, G.

AU - Jacquemin, Johan

AU - Husson, P.

AU - Gomes, M.F.C.

AU - Deetlefs, Maggel

AU - Nieuwenhuyzen, Mark

AU - Sheppard, O.

AU - Hardacre, Christopher

PY - 2006/11/22

Y1 - 2006/11/22

N2 - The effect of the addition of acetonitrile on the solubility of carbon dioxide in an ionic liquid, the 1-ethyl-3- methylimidazolium bis(trifluoromethanesulfonyl)amide, [C(2)mim][NTf2], was studied experimentally at pressures close to atmospheric and as a function of temperature between 290 and 335 K. It was observed that the solubility of carbon dioxide decreases linearly with the mole fraction of acetonitrile from a value of 2.6 x 10(-2) in the pure ionic liquid at 303 K to a mole fraction of 1.3 x 10(-2) in the mixture [C(2)mim][NTf2] + CH3CN with x(CH3CN) = 0.77 at the same temperature. The gas solubility decreases with temperature, and the thermodynamic properties of solvation could be calculated. The vapor pressures of the [ C2mim][ NTf2] + CH3CN mixtures were measured in the same temperature range, and strong negative deviations from Raoult's law were obtained: up to 36% for a mixture with x(CH3CN) = 0.46 at 334 K. Negative excess molar volumes of approximately -1 cm(3) mol(-1) at equimolar composition could also be calculated from density measurements of the pure components and of the mixtures. These observations are confirmed by neutron diffraction studies and are compatible with the existence of strong ion-dipole interactions in the mixed liquid solvent.

AB - The effect of the addition of acetonitrile on the solubility of carbon dioxide in an ionic liquid, the 1-ethyl-3- methylimidazolium bis(trifluoromethanesulfonyl)amide, [C(2)mim][NTf2], was studied experimentally at pressures close to atmospheric and as a function of temperature between 290 and 335 K. It was observed that the solubility of carbon dioxide decreases linearly with the mole fraction of acetonitrile from a value of 2.6 x 10(-2) in the pure ionic liquid at 303 K to a mole fraction of 1.3 x 10(-2) in the mixture [C(2)mim][NTf2] + CH3CN with x(CH3CN) = 0.77 at the same temperature. The gas solubility decreases with temperature, and the thermodynamic properties of solvation could be calculated. The vapor pressures of the [ C2mim][ NTf2] + CH3CN mixtures were measured in the same temperature range, and strong negative deviations from Raoult's law were obtained: up to 36% for a mixture with x(CH3CN) = 0.46 at 334 K. Negative excess molar volumes of approximately -1 cm(3) mol(-1) at equimolar composition could also be calculated from density measurements of the pure components and of the mixtures. These observations are confirmed by neutron diffraction studies and are compatible with the existence of strong ion-dipole interactions in the mixed liquid solvent.

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U2 - 10.1021/ie0605377

DO - 10.1021/ie0605377

M3 - Article

VL - 45

SP - 8180

EP - 8188

JO - INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

JF - INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

SN - 0888-5885

IS - 24

ER -