High pressure solubility of methane in the ionic liquid 1-hexyl-3-methylimidazolium tricyanomethanide

M. Althuluth; M.C. Kroon; C.J. Peters

doi:10.1016/j.supflu.2017.05.021

High pressure solubility of methane in the ionic liquid 1-hexyl-3-methylimidazolium tricyanomethanide

M. Althuluth, M.C. Kroon, C.J. Peters

Research output: Contribution to journal › Article › Academic › peer-review

7 Citations (Scopus)

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Abstract

In this paper, new experimental measurements of methane (CH₄) solubility in the ionic liquid (IL) 1-hexyl-3-methylimidazolium tricyanomethanide ([hmim][TCM]) are presented. The solubility data were obtained using a synthetic method based on bubble-point pressure measurements for concentrations ranging from (2–10) CH₄ mole% and within a temperature range of (293–363 K) and pressures up to 10 MPa. The results obtained in this work were compared with those obtained for other ILs. The IL [hmim][TCM] was found to show the lowest CH₄ solubility, which is desired for application of this IL as gas sweetening solvent (low co-absorption of hydrocarbons). Moreover, the CH₄ solubility was compared to the CO₂ solubility in the same IL, showing that [hmim][TCM] can selectively absorb CO₂ from natural gas. The experimental solubility data of CH₄ in [hmim][TCM] were accurately modeled using the PR-EoS with only one temperature-independent binary interaction parameter.

Original language	English
Pages (from-to)	145-148
Number of pages	4
Journal	Journal of Supercritical Fluids
Volume	128
DOIs	https://doi.org/10.1016/j.supflu.2017.05.021
Publication status	Published - 1 Oct 2017

Keywords

1-Hexyl-3-methylimidazolium tricyanomethanide
High pressure
Ionic liquid
Methane
PR-EoS
Solubility

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Althuluth, M., Kroon, M. C., & Peters, C. J. (2017). High pressure solubility of methane in the ionic liquid 1-hexyl-3-methylimidazolium tricyanomethanide. Journal of Supercritical Fluids, 128, 145-148. https://doi.org/10.1016/j.supflu.2017.05.021

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abstract = "In this paper, new experimental measurements of methane (CH4) solubility in the ionic liquid (IL) 1-hexyl-3-methylimidazolium tricyanomethanide ([hmim][TCM]) are presented. The solubility data were obtained using a synthetic method based on bubble-point pressure measurements for concentrations ranging from (2–10) CH4 mole% and within a temperature range of (293–363 K) and pressures up to 10 MPa. The results obtained in this work were compared with those obtained for other ILs. The IL [hmim][TCM] was found to show the lowest CH4 solubility, which is desired for application of this IL as gas sweetening solvent (low co-absorption of hydrocarbons). Moreover, the CH4 solubility was compared to the CO2 solubility in the same IL, showing that [hmim][TCM] can selectively absorb CO2 from natural gas. The experimental solubility data of CH4 in [hmim][TCM] were accurately modeled using the PR-EoS with only one temperature-independent binary interaction parameter.",

keywords = "1-Hexyl-3-methylimidazolium tricyanomethanide, High pressure, Ionic liquid, Methane, PR-EoS, Solubility",

author = "M. Althuluth and M.C. Kroon and C.J. Peters",

year = "2017",

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AU - Kroon, M.C.

AU - Peters, C.J.

PY - 2017/10/1

Y1 - 2017/10/1

N2 - In this paper, new experimental measurements of methane (CH4) solubility in the ionic liquid (IL) 1-hexyl-3-methylimidazolium tricyanomethanide ([hmim][TCM]) are presented. The solubility data were obtained using a synthetic method based on bubble-point pressure measurements for concentrations ranging from (2–10) CH4 mole% and within a temperature range of (293–363 K) and pressures up to 10 MPa. The results obtained in this work were compared with those obtained for other ILs. The IL [hmim][TCM] was found to show the lowest CH4 solubility, which is desired for application of this IL as gas sweetening solvent (low co-absorption of hydrocarbons). Moreover, the CH4 solubility was compared to the CO2 solubility in the same IL, showing that [hmim][TCM] can selectively absorb CO2 from natural gas. The experimental solubility data of CH4 in [hmim][TCM] were accurately modeled using the PR-EoS with only one temperature-independent binary interaction parameter.

AB - In this paper, new experimental measurements of methane (CH4) solubility in the ionic liquid (IL) 1-hexyl-3-methylimidazolium tricyanomethanide ([hmim][TCM]) are presented. The solubility data were obtained using a synthetic method based on bubble-point pressure measurements for concentrations ranging from (2–10) CH4 mole% and within a temperature range of (293–363 K) and pressures up to 10 MPa. The results obtained in this work were compared with those obtained for other ILs. The IL [hmim][TCM] was found to show the lowest CH4 solubility, which is desired for application of this IL as gas sweetening solvent (low co-absorption of hydrocarbons). Moreover, the CH4 solubility was compared to the CO2 solubility in the same IL, showing that [hmim][TCM] can selectively absorb CO2 from natural gas. The experimental solubility data of CH4 in [hmim][TCM] were accurately modeled using the PR-EoS with only one temperature-independent binary interaction parameter.

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