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

Abstract

This 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.
Author Marta Królikowska (FC / DPC)
Marta Królikowska,,
- Department Of Physical Chemistry
, Monika Karpińska (FC / DPC)
Monika Karpińska,,
- Department Of Physical Chemistry
, Marek Królikowski (FC / DPC)
Marek Królikowski,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2013
Vol62
Pages1-7
Publication size in sheets0.5
Keywords in EnglishIonic liquid, Activity coefficients at infinite dilution, Selectivity, Heptane, Xylene
ASJC Classification1606 Physical and Theoretical Chemistry; 2500 General Materials Science; 3107 Atomic and Molecular Physics, and Optics
DOIDOI:10.1016/j.jct.2013.02.004
URL http://www.sciencedirect.com/science/article/pii/S0021961413000670
Languageen angielski
File
9-s2.0-S0021961413000670-main.pdf 657.75 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 30.0, 17-08-2020, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 17-08-2020, ArticleFromJournal
Publication indicators Scopus Citations = 13; WoS Citations = 16; GS Citations = 3.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.234; WoS Impact Factor: 2013 = 2.423 (2) - 2013=2.399 (5)
Citation count*3 (2015-03-08)
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