Hildebrand Solubility Parameters of Amidium Ionic Liquids
Chen, Zheng Jian
Tan, Timothy Thatt Yang
Date of Issue2015
School of Chemical and Biomedical Engineering
The Hildebrand solubility parameters of amidium ionic liquids were investigated using the approach of intrinsic viscosity. It was discovered that the nature of the anion influences the Hildebrand solubility parameters by which distillable trifluoromethanesulfonate- (TfO-) based ionic liquids present higher Hildebrand solubility parameters than bis(trifluoromethylsulfonyl)imide- (NTf2-) based ionic liquids. In this work, we also studied the effect of dissolution temperature on the Hildebrand solubility parameters of ionic liquids. An increase in temperature from 25 to 60 °C results in a decrease in the Hildebrand solubility parameters of ionic liquids. Moreover, the cohesive energy density, molar internal energy, and enthalpy of dissolution were evaluated. The molar internal energy and enthalpy of dissolution are almost constant or show a slight decrease with increasing dissolution temperature for O-methylated TfO-based ionic liquids.
Chemical and Biomedical Engineering
Industrial & Engineering Chemistry Research
© 2015 American Chemical Society. This paper was published in Industrial & Engineering Chemistry Research and is made available as an electronic reprint (preprint) with permission of American Chemical Society. The published version is available at: [http://dx.doi.org/10.1021/acs.iecr.5b02705]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.