2 0 2009 rae pet 0 journal Original Raeissi, S.[Sona] Peters, C. J.[Cor J.] J. Chem. Eng. Data 2009 2009-02-25 Carbon Dioxide Solubility in the Homologous 1-Alkyl-3-methylimidazolium Bis(trifluoromethylsulfonyl)imide Family The high-pressure phase behavior of the binary system CO2 + 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl) imide was determined experimentally by a synthetic method. Bubble points were measured for mixtures of various carbon dioxide concentrations within a temperature and pressure range of (310 to 450) K and (0.5 to 14) MPa, respectively. The results were compared with solubility data obtained by three other research laboratories using different phase equilibria measuring techniques, and good agreement was observed in every case. The effect of the cation alkyl chain length was also investigated by comparing CO2 solubility in four homologous members of the 1-alkyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide family in which the alkyl was either ethyl, butyl, hexyl, or octyl. It was shown that CO2 solubility increases almost linearly with increasing alkyl chain length. 10.1021/je800433r 54 382-386 1 carbon dioxide CO2 1 Commercial source 1 99.995 5 Stated by supplier 2 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide C10H15F6N3O4S2 1 Commercial source 1 98 2 Stated by supplier 2 Molecular sieve treatment 1 1 2 1 Principal objective of the work KRP TRC 2/13/2009 1 Vapor or sublimation pressure, kPa Closed cell (Static) method Gas Direct value, X 1 Author Gas Liquid 1 Mole fraction 1 Gas 1 Author 2 Temperature, K 1 Author 1 .0847 3 2 313.55 5 1 422 3 1 .1266 1 .0847 3 2 342.43 5 1 648 3 1 .1944 1 .0847 3 2 371.5 5 1 903 3 1 .2709 1 .0847 3 2 400.58 5 1 1198 4 1 .3594 1 .0847 3 2 429.98 5 1 1503 4 1 .4509 1 .0847 3 2 323.08 5 1 488 3 1 .1464 1 .0847 3 2 352.13 5 1 723 3 1 .2169 1 .0847 3 2 381.17 5 1 1003 4 1 .3009 1 .0847 3 2 410.32 5 1 1303 4 1 .3909 1 .0847 3 2 439.54 5 1 1603 4 1 .4809 1 .0847 3 2 332.73 5 1 558 3 1 .1674 1 .0847 3 2 361.82 5 1 813 3 1 .2439 1 .0847 3 2 390.67 5 1 1098 4 1 .3294 1 .0847 3 2 420.12 5 1 1408 4 1 .4224 1 .0847 3 2 449.29 5 1 1703 4 1 .5109 1 .1886 4 2 313.6 5 1 1002 4 1 .3006 1 .1886 4 2 342.42 5 1 1552 4 1 .4656 1 .1886 4 2 371.43 5 1 2202 4 1 .6606 1 .1886 4 2 400.64 5 1 2912 4 1 .8736 1 .1886 4 2 429.89 5 1 3648 4 1 1.0944 1 .1886 4 2 323.08 5 1 1172 4 1 .3516 1 .1886 4 2 352.11 5 1 1757 4 1 .5271 1 .1886 4 2 380.99 5 1 2433 4 1 .7299 1 .1886 4 2 410.37 5 1 3158 4 1 .9474 1 .1886 4 2 439.64 5 1 3888 4 1 1.1664 1 .1886 4 2 332.74 5 1 1357 4 1 .4071 1 .1886 4 2 361.76 5 1 1972 4 1 .5916 1 .1886 4 2 390.86 5 1 2668 4 1 .8004 1 .1886 4 2 420.16 5 1 3398 4 1 1.0194 1 .1886 4 2 449.38 5 1 4133 4 1 1.2399 1 .2926 4 2 313.58 5 1 1724 4 1 .5172 1 .2926 4 2 342.55 5 1 2700 4 1 .81 1 .2926 4 2 371.56 5 1 3900 4 1 1.17 1 .2926 4 2 400.62 5 1 5150 4 1 1.545 1 .2926 4 2 429.87 5 1 6475 4 1 1.9425 1 .2926 4 2 323.08 5 1 2024 4 1 .6072 1 .2926 4 2 352.1 5 1 3105 4 1 .9315 1 .2926 4 2 381.22 5 1 4304 4 1 1.2912 1 .2926 4 2 410.37 5 1 5600 4 1 1.68 1 .2926 4 2 439.6 5 1 6900 4 1 2.07 1 .2926 4 2 332.75 5 1 2350 4 1 .705 1 .2926 4 2 361.77 5 1 3500 4 1 1.05 1 .2926 4 2 390.88 5 1 4729 4 1 1.4187 1 .2926 4 2 420.21 5 1 6035 4 1 1.8105 1 .2926 4 2 449.36 5 1 7325 4 1 2.1975 1 .3818 4 2 313.5 5 1 2473 4 1 .7419 1 .3818 4 2 342.47 5 1 3943 4 1 1.1829 1 .3818 4 2 371.5 5 1 5682 4 1 1.7046 1 .3818 4 2 400.63 5 1 7593 4 1 2.2779 1 .3818 4 2 429.86 5 1 9548 4 1 2.8644 1 .3818 4 2 323.08 5 1 2938 4 1 .8814 1 .3818 4 2 352.12 5 1 4497 4 1 1.3491 1 .3818 4 2 381.25 5 1 6303 4 1 1.8909 1 .3818 4 2 410.52 5 1 8248 4 1 2.4744 1 .3818 4 2 439.65 5 1 10198 5 1 3.0594 1 .3818 4 2 332.77 5 1 3423 4 1 1.0269 1 .3818 4 2 361.86 5 1 5082 4 1 1.5246 1 .3818 4 2 390.91 5 1 6943 4 1 2.0829 1 .3818 4 2 420.12 5 1 8933 4 1 2.6799 1 .3818 4 2 449.41 5 1 10833 5 1 3.2499 1 .4866 4 2 313.57 5 1 3799 4 1 1.1397 1 .4866 4 2 352.1 5 1 7197 4 1 2.1591 1 .4866 4 2 410.37 5 1 13473 5 1 4.0419 1 .4866 4 2 332.76 5 1 5289 4 1 1.5867 1 .4866 4 2 371.46 5 1 9172 4 1 2.7516 1 .4866 4 2 415.25 5 1 14023 5 1 4.2069 1 .4866 4 2 342.53 5 1 6137 4 1 1.8411 1 .4866 4 2 390.87 5 1 11273 5 1 3.3819 1 .5257 4 2 314.65 5 1 4448 4 1 1.3344 1 .5257 4 2 342.45 5 1 7074 4 1 2.1222 1 .5257 4 2 371.43 5 1 10425 5 1 3.1275 1 .5257 4 2 400.59 5 1 14099 5 1 4.2297 1 .5257 4 2 323.15 5 1 5174 4 1 1.5522 1 .5257 4 2 352.11 5 1 8124 4 1 2.4372 1 .5257 4 2 381.11 5 1 11625 5 1 3.4875 1 .5257 4 2 332.79 5 1 6099 4 1 1.8297 1 .5257 4 2 361.76 5 1 9250 4 1 2.775 1 .5257 4 2 390.95 5 1 12874 5 1 3.8622 1 .5852 4 2 313.65 5 1 5483 4 1 1.6449 1 .5852 4 2 342.43 5 1 9213 4 1 2.7639 1 .5852 4 2 371.59 5 1 13959 5 1 4.1877 1 .5852 4 2 323.13 5 1 6588 4 1 1.9764 1 .5852 4 2 352.11 5 1 10713 5 1 3.2139 1 .5852 4 2 313.65 5 1 5527 4 1 1.6581 1 .5852 4 2 332.73 5 1 7828 4 1 2.3484 1 .5852 4 2 361.93 5 1 12304 5 1 3.6912