Abstract
While phosphonium-based ionic liquids are good solvents for gases, they have high viscosities. Addition of a diluent like dodecane significantly lowers the viscosities of the ionic liquids. In the range 20–90 ℃, viscosities and densities were measured for binary mixtures of dodecane with one of five phosphonium-based ionic liquids: Tributylmethylphosphonium bis(2,4,4-trimethylpentyl)phosphinate [TMPP-PA], Tributyltetradecylphosphonium dodecylbenyzenesulfonate [TTDP-DB], Trimethyloctylphosphonium bis(2,4,4-trimethylpentyl)phosphinate [TMPP-TP], Trihexyltetradecylphosphonium dicyanamide [TTDP-DC], and Trihexyltetradecylphophonium bis(2,4,4-trimethylpentyl)phosphoniate [TTDP-PA]. For every one of these ionic liquids, addition of 10 wt. % dodecane very much reduces the viscosity but slightly reduces the density.
Original language | English |
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Pages (from-to) | 839-850 |
Number of pages | 12 |
Journal | Zeitschrift für Physikalische Chemie |
Volume | 228 |
Issue number | 8 |
DOIs | |
Publication status | Published - Jul 2014 |
Keywords
- viscosity
- density
- dodecane
- tetraalkylphosphonium-based ionic liquids