| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 215195 | The Journal of Chemical Thermodynamics | 2015 | 7 Pages |
•Novel dicationic ionic liquid based pyrrolidinium was synthesized ([C9(2MNPTpy)2][(NTf2)2]).•Interactions between the solutes and solvent were measured in this ionic liquid by using Abraham solvation parameter model.•Activity coefficient at infinite dilution has been determined in this IL for 26 polar and non-polar compounds.•The [C9(2MNPTpy)2][(NTf2)2] has a good potential for separation of the aromatic and aliphatics.
The activity coefficient at infinite dilution, γ∞γ∞ has been determined for 26 solutes (alkanes, alcohols, amines, aromatics, chloroalkanes, ketones, ethers) in a newly developed dicationic ionic liquid 1,9-di(N-naphthalen-2-ylmethylpyrrolidinium)nonanebis[(trifluoromethyl)sulfonyl]imide ([C9(2MNPTpy)2][(NTf2)−2]) by inverse gas chromatography at four different temperatures (T = 313, 323, 333 and 343 K). Solvation interactions between solvents and solute molecules have been estimated at T = (313, 343 and 373) K using Abraham solvation parameter. The experiments were carried out at various stationary phase loadings of (5 to 18)%. The selectivity values for cyclohexane/aromatics, octane/linear alcohols, octane/polar solutions were extracted from experimental activity coefficient data at T = 313 K. Compared with other ionic liquids from the literatures, this ionic liquid can be utilized as an efficient solvent for (aromatic + aliphatic) separation.
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