Measurements of activity coefficients at infinite dilution for organic solutes and water in N-hexylisoquinolinium thiocyanate, [HiQuin][SCN] using GLC
Marta Królikowska , Monika Karpińska , Marek Królikowski
AbstractThis work is a continuation of our research of ionic liquids (ILs) to investigate the possibility of using them as a solvent for the separation processes, especially for extraction of aromatic from aliphatic hydrocarbons. New data of the activity coefficients at infinite dilution, View the MathML source were determined for 53 solutes including: n-alkanes, alk-1-enes, alk-1-ynes, cycloalkanes, aromatic hydrocarbons, alcohols, thiophene, ethers, ketones, acetonitrile, pyridine, 1-nitropropane and water in the ionic liquid: N-hexylisoquinolinium thiocyanate, [HiQuin][SCN] using inverse gas chromatography at wide range of temperature from (308.15 to 368.15) K. From the temperature dependence of View the MathML source the basic thermodynamic function, that is partial molar excess Gibbs free energies, View the MathML source, enthalpies View the MathML source and entropies TrefView the MathML source at infinite dilution were calculated at a wide temperature range. Additionally the gas–liquid partition coefficients, KL were determined. The selectivities for n-heptane/toluene, cyclohexane/benzene, n-heptane/xylenes separation problems were calculated directly from the experimental values of View the MathML source and compared to the studies from the recent literature for other ionic liquids.
|Journal series||Journal of Chemical Thermodynamics, ISSN 0021-9614|
|Publication size in sheets||0.5|
|Keywords in English||Ionic liquid, Activity coefficients at infinite dilution, Selectivity, Heptane, Xylene|
|ASJC Classification||; ;|
|Score|| = 30.0, 17-08-2020, ArticleFromJournal|
= 35.0, 17-08-2020, ArticleFromJournal
|Publication indicators||= 13; = 16; = 3.0; : 2013 = 1.234; : 2013 = 2.423 (2) - 2013=2.399 (5)|
|Citation count*||3 (2015-03-08)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.