Mutual solubility measurements and correlations of imidazolium-based ionic liquid mixtures with alcohols

Chayanaphat Chokradjaroen; Xiaoli Li; Kazuhiro Tamura

doi:10.1016/j.jct.2011.05.023

Mutual solubility measurements and correlations of imidazolium-based ionic liquid mixtures with alcohols

Chayanaphat Chokradjaroen, Xiaoli Li, Kazuhiro Tamura

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

7 Citations (Scopus)

Abstract

The mutual solubility of ionic liquids (ILs), 1-butyl-3-ethylimidazolium tetrafluoroborate, 1-butyl-3-propylimidazolium tetrafluoroborate, and 1,3-dibutylimidazolium tetrafluoroborate with alcohols, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol were measured at atmospheric pressure. Upper critical solution temperatures (UCSTs) were estimated from experimental results using a polynomial equation. The UCSTs increased as increasing the chain length of alcohol. On other hand, the decreasing UCSTs occurred when the alkyl chain length on the cation of ionic liquids increased. The (liquid + liquid) equilibrium data were correlated by the original UNIQUAC, extended UNIQUAC, and modified UNIQUAC models. The temperature dependence of the solubility of ILs in alcohols and alcohols in ILs is represented successfully using the UNIQUAC, extended UNIQUAC, and modified UNIQUAC models with a quadratic function of temperature for binary energy parameters.

Original language	English
Pages (from-to)	72-79
Number of pages	8
Journal	Journal of Chemical Thermodynamics
Volume	46
DOIs	https://doi.org/10.1016/j.jct.2011.05.023
Publication status	Published - 2012 Mar 1
Externally published	Yes

Keywords

(Liquid + liquid) equilibrium
Alcohol
Imidazolium-based ionic liquid
Mutual solubility
UNIQUAC model

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Physical and Theoretical Chemistry

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title = "Mutual solubility measurements and correlations of imidazolium-based ionic liquid mixtures with alcohols",

abstract = "The mutual solubility of ionic liquids (ILs), 1-butyl-3-ethylimidazolium tetrafluoroborate, 1-butyl-3-propylimidazolium tetrafluoroborate, and 1,3-dibutylimidazolium tetrafluoroborate with alcohols, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol were measured at atmospheric pressure. Upper critical solution temperatures (UCSTs) were estimated from experimental results using a polynomial equation. The UCSTs increased as increasing the chain length of alcohol. On other hand, the decreasing UCSTs occurred when the alkyl chain length on the cation of ionic liquids increased. The (liquid + liquid) equilibrium data were correlated by the original UNIQUAC, extended UNIQUAC, and modified UNIQUAC models. The temperature dependence of the solubility of ILs in alcohols and alcohols in ILs is represented successfully using the UNIQUAC, extended UNIQUAC, and modified UNIQUAC models with a quadratic function of temperature for binary energy parameters.",

keywords = "(Liquid + liquid) equilibrium, Alcohol, Imidazolium-based ionic liquid, Mutual solubility, UNIQUAC model",

author = "Chayanaphat Chokradjaroen and Xiaoli Li and Kazuhiro Tamura",

year = "2012",

month = mar,

day = "1",

doi = "10.1016/j.jct.2011.05.023",

language = "English",

volume = "46",

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journal = "Journal of Chemical Thermodynamics",

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AU - Chokradjaroen, Chayanaphat

AU - Li, Xiaoli

AU - Tamura, Kazuhiro

PY - 2012/3/1

Y1 - 2012/3/1

N2 - The mutual solubility of ionic liquids (ILs), 1-butyl-3-ethylimidazolium tetrafluoroborate, 1-butyl-3-propylimidazolium tetrafluoroborate, and 1,3-dibutylimidazolium tetrafluoroborate with alcohols, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol were measured at atmospheric pressure. Upper critical solution temperatures (UCSTs) were estimated from experimental results using a polynomial equation. The UCSTs increased as increasing the chain length of alcohol. On other hand, the decreasing UCSTs occurred when the alkyl chain length on the cation of ionic liquids increased. The (liquid + liquid) equilibrium data were correlated by the original UNIQUAC, extended UNIQUAC, and modified UNIQUAC models. The temperature dependence of the solubility of ILs in alcohols and alcohols in ILs is represented successfully using the UNIQUAC, extended UNIQUAC, and modified UNIQUAC models with a quadratic function of temperature for binary energy parameters.

AB - The mutual solubility of ionic liquids (ILs), 1-butyl-3-ethylimidazolium tetrafluoroborate, 1-butyl-3-propylimidazolium tetrafluoroborate, and 1,3-dibutylimidazolium tetrafluoroborate with alcohols, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol were measured at atmospheric pressure. Upper critical solution temperatures (UCSTs) were estimated from experimental results using a polynomial equation. The UCSTs increased as increasing the chain length of alcohol. On other hand, the decreasing UCSTs occurred when the alkyl chain length on the cation of ionic liquids increased. The (liquid + liquid) equilibrium data were correlated by the original UNIQUAC, extended UNIQUAC, and modified UNIQUAC models. The temperature dependence of the solubility of ILs in alcohols and alcohols in ILs is represented successfully using the UNIQUAC, extended UNIQUAC, and modified UNIQUAC models with a quadratic function of temperature for binary energy parameters.

KW - (Liquid + liquid) equilibrium

KW - Alcohol

KW - Imidazolium-based ionic liquid

KW - Mutual solubility

KW - UNIQUAC model

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JO - Journal of Chemical Thermodynamics

JF - Journal of Chemical Thermodynamics

SN - 0021-9614

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Mutual solubility measurements and correlations of imidazolium-based ionic liquid mixtures with alcohols

Abstract

Keywords

ASJC Scopus subject areas

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