Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids

Jelliarko Palgunadi, Je Eun Kang, Dinh Quan Nguyen, Jin Hyung Kim, Byoung Koun Min, Sang Deuk Lee, Honggon Kim, Hoon Sik Kim

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

The solubility of carbon dioxide in room temperature ionic liquids (RTILs), dialkylimidazolium dialkylphosphates, was measured at 313-333 K and at pressures close to atmospheric pressure, from which Henry's law coefficients, standard Gibbs free energy, enthalpy, and entropy changes of solvation were derived. The CO2 solubility in the dialkylimidazolium dialkylphosphate was found to increase with increasing chain length of the alkyl groups on the cation and/or the anion as was similarly found in other RTILs. Among various dialkylimidazolium dialkylphosphates tested, 1-ethyl-3-methylimidazolium diethylphosphate ([EMIM][Et2PO4]) and 1-butyl-3-methylimidazolium dibutylphosphate ([BMIM][Bu2PO4]) exhibited the comparable or better capability of dissolving CO2 in comparison with that of [BMIM][BF4], but their absorption capacities were still lower than that of 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][Tf2N]).

Original languageEnglish
Pages (from-to)94-98
Number of pages5
JournalThermochimica Acta
Volume494
Issue number1-2
DOIs
Publication statusPublished - 2009 Oct 10

Fingerprint

Ionic Liquids
Ionic liquids
solubility
Solubility
Henry law
imides
Solvation
room temperature
Gibbs free energy
liquids
Chain length
Carbon Dioxide
Atmospheric pressure
Anions
solvation
Cations
carbon dioxide
Enthalpy
Carbon dioxide
atmospheric pressure

Keywords

  • CO capture
  • Dialkylimidazolium dialkylphosphate
  • Ionic liquids

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics
  • Instrumentation

Cite this

Palgunadi, J., Kang, J. E., Nguyen, D. Q., Kim, J. H., Min, B. K., Lee, S. D., ... Kim, H. S. (2009). Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids. Thermochimica Acta, 494(1-2), 94-98. https://doi.org/10.1016/j.tca.2009.04.022

Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids. / Palgunadi, Jelliarko; Kang, Je Eun; Nguyen, Dinh Quan; Kim, Jin Hyung; Min, Byoung Koun; Lee, Sang Deuk; Kim, Honggon; Kim, Hoon Sik.

In: Thermochimica Acta, Vol. 494, No. 1-2, 10.10.2009, p. 94-98.

Research output: Contribution to journalArticle

Palgunadi, J, Kang, JE, Nguyen, DQ, Kim, JH, Min, BK, Lee, SD, Kim, H & Kim, HS 2009, 'Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids', Thermochimica Acta, vol. 494, no. 1-2, pp. 94-98. https://doi.org/10.1016/j.tca.2009.04.022
Palgunadi J, Kang JE, Nguyen DQ, Kim JH, Min BK, Lee SD et al. Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids. Thermochimica Acta. 2009 Oct 10;494(1-2):94-98. https://doi.org/10.1016/j.tca.2009.04.022
Palgunadi, Jelliarko ; Kang, Je Eun ; Nguyen, Dinh Quan ; Kim, Jin Hyung ; Min, Byoung Koun ; Lee, Sang Deuk ; Kim, Honggon ; Kim, Hoon Sik. / Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids. In: Thermochimica Acta. 2009 ; Vol. 494, No. 1-2. pp. 94-98.
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