Palgunadi, Jelliarko Kang, Je Eun Cheong, Minserk Kim, Honggon Lee, Hyunjoo Kim, Hoon Sik 2024-01-20T21:02:25Z 2024-01-20T21:02:25Z 2021-09-03 2009-08 0253-2964 https://pubs.kist.re.kr/handle/201004/132270 Solubilities of carbon dioxide (CO2) in a series of fluorine-free room temperature ionic liquids (RTILs), dialkylimidazolium dialkylphosphates and dialkylimidazolium alkylphosphites, were measured at 313 similar to 333 K and pressures up to 5 MPa. Henry's law coefficients as the solubility parameter of CO2 in RTILs were derived from the isotherm of fugacity versus CO2 mole fraction. The CO2 Solubility in a phosphorus-containing RTIL was found to increase with the increasing molar volume of the RTIL. In general, dialkylimidazolium dialkylphosphate exhibited higher absorption capacity than dialkylimidazolium alkylphosphite as long as the RTILs possess an identical cation. Among RTILs tested, 1-butyl-3-methylimidazolium dibutylphosphate [BMIM][Bu2PO4] and 1-butyl-3-methylimidazolium butylphosphite [BMIM][BuHPO3] exhibited similar Henry's law coefficients to 1-butyl-3-methylimidazolium his (trifluoromethylsulfonyl)imide ([BMIM][Tf2N]) and 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM][BF4]), respectively. The Krichevsky-Kasamovsky equation was employed to derive the CO2 solubility parameter (Henry's law coefficient) from the solubility data measured at elevated pressures. English WILEY-V C H VERLAG GMBH PRESSURE PHASE-BEHAVIOR CARBON-DIOXIDE PHYSICAL-PROPERTIES SOLUBILITY TEMPERATURE TETRAFLUOROBORATE BIS(TRIFLUOROMETHYLSULFONYL)IMIDE HYDROGEN METHANE SYSTEMS Fluorine-Free Imidazolium-Based Ionic Liquids with a Phosphorous-Containing Anion as Potential CO2 Absorbents Article 1 BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.30, no.8, pp.1749 - 1754 BULLETIN OF THE KOREAN CHEMICAL SOCIETY 30 8 1749 1754 scie scopus kci ART001524653 000269502300013 2-s2.0-75649106830 Chemistry, Multidisciplinary Chemistry Article PRESSURE PHASE-BEHAVIOR CARBON-DIOXIDE PHYSICAL-PROPERTIES SOLUBILITY TEMPERATURE TETRAFLUOROBORATE BIS(TRIFLUOROMETHYLSULFONYL)IMIDE HYDROGEN METHANE SYSTEMS CO2 solubility Room temperature ionic liquids Dialkylimidazolium dialylphosphate Dialkylimidazolium alkylphosphite