Influence of anion structure on the liquid–liquid equilibria of 1-(3-hydroxypropyl)pyridinium cation based ionic liquid–hydrocarbon binary systems

Add time:09/04/2019    Source:sciencedirect.com

Binary liquid–liquid equilibria for 10 systems containing an ionic liquid (1-(3-hydroxypropyl)pyridinium bis(trifluoromethylsulfonyl)-amide and 1-(3-hydroxypropyl)pyridinium trifluorotris(perfluoroethyl)phosphate) with a hydrocarbon (n-hexane, n-heptane, cyclohexane, benzene, toluene) were measured by dynamic method. The influence of anion structure of 1-(3-hydroxypropyl)pyridinium cation based ionic liquids on solubility of aliphatic and aromatic hydrocarbons is discussed.

► Binary LLE for ionic liquids and hydrocarbons. ► Diagrams typical for systems with upper critical solution temperature (UCST). ► Aromatic hydrocarbons have better solubility than aliphatic hydrocarbons. ► The solubility of hydrocarbons is lower for ionic liquid with [NTf2]− anion than that for [FAP]−.

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