Palgunadi, Jelliarko Kang, Je Eun Nguyen, Dinh Quan Kim, Jin Hyung Min, Byoung Koun Lee, Sang Deuk Kim, Honggon Kim, Hoon Sik 2024-01-20T20:32:12Z 2024-01-20T20:32:12Z 2021-09-05 2009-10-10 0040-6031 https://pubs.kist.re.kr/handle/201004/132036 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 dialkyl phosphate 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 dibutyl phosphate ([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]). (C) 2009 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV PRESSURE PHASE-BEHAVIOR CARBON-DIOXIDE IMIDAZOLIUM TETRAFLUOROBORATE MIXTURES HYDROGEN SYSTEMS CATION ANION Solubility of CO2 in dialkylimidazolium dialkylphosphate ionic liquids Article 10.1016/j.tca.2009.04.022 1 THERMOCHIMICA ACTA, v.494, no.1-2, pp.94 - 98 THERMOCHIMICA ACTA 494 1-2 94 98 scie scopus 000270689100013 2-s2.0-70249147579 Thermodynamics Chemistry, Analytical Chemistry, Physical Thermodynamics Chemistry Article PRESSURE PHASE-BEHAVIOR CARBON-DIOXIDE IMIDAZOLIUM TETRAFLUOROBORATE MIXTURES HYDROGEN SYSTEMS CATION ANION CO2 capture Ionic liquids Dialkylimidazolium dialkylphosphate