Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6660462 | The Journal of Chemical Thermodynamics | 2015 | 6 Pages |
Abstract
New values of activity coefficients at infinite dilution, γâ for 65 different solutes including alkanes, alkenes, alkynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, aldehydes, esters and water in the ionic liquid ethyl-dimethyl-(2-methoxyethyl)ammonium trifluorotris(perfluoroethyl)phosphate, were determined using inverse gas chromatography within the temperature range from (318.15 to 368.15) K. This is a continuation our study of ionic liquids based on this anion and 2-hydroxyethyl cation substituent. The experimental γâ values were used to calculate thermodynamics functions such as partial molar excess Gibbs energy ÎG1E,â, enthalpy ÎH1E,â and entropy ÎS1E,â. Additionally the (gas + liquid) partition coefficients of the solutes, KL were calculated and were used to determine the linear Gibbs energy relationship (LFER) system constants as a function of temperature. Values of the selectivity and capacity at infinite dilution for alkanes/thiophene extraction problems were also calculated. Results were compared to ionic liquids investigated previously with the same anion.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Andrzej Marciniak, MichaÅ WlazÅo,