Abstract
Solubilities are reported for methane, ethane, ethylene, and propane in trimethyloctylphosphonium bis(2,4,4-trimethylpentyl) phosphinate [P8111][TMPP] from 299 to 323 K up to 4 MPa. Consistent with prediction of COSMO-RS, [P8111][TMPP] shows large solubilities for all four hydrocarbons. Contrary to solubility data in conventional ionic liquids, in [P8111][TMPP] the solubility for ethane is higher than that for ethylene. When compared with solubilities in other similar phosphonium-based ionic liquids, the cation has only a small influence on the solubilities of small hydrocarbons. Ionic liquid [P8111][TMPP] may be useful for storage or separation of small hydrocarbons.
Original language | English |
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Pages (from-to) | 363-368 |
Number of pages | 6 |
Journal | Industrial & Engineering Chemistry Research |
Volume | 53 |
Issue number | 1 |
Early online date | 14 Oct 2013 |
DOIs | |
Publication status | Published - 8 Jan 2014 |