Heat capacity, excess molar volumes and viscosity deviation of binary systems of N-octylisoquinolinium bis{(trifluoromethyl)sulfonyl}imide ionic liquid

Urszula Domańska-Żelazna , Maciej Zawadzki , Marek Królikowski

Abstract

Heat capacities were determined for two binary systems {N-octylisoquinolinium bis{(trifluoromethyl)sulfonyl} imide, ([C8iQuin][NTf2]) + benzene, or butan-1-ol} from (288.15 to 388.15) K. Density and viscosity were determined for four binary mixtures containing {[C8iQuin][NTf2]) + benzene, or toluene, or thiophene or pyridine} at six temperatures (298.15, 308.15, 318.15, 328.15, 338.15 and 348.15) K, ambient pressure, and covering the entire composition range. The influence of temperature and composition was discussed. As usually the heat capacity increases with an increase of the ionic liquid concentration. The molar heat capacities, densities and viscosities were correlated with suitable equations. The excess molar heat capacities, Δ Cp, the excess molar volumes, VmE and dynamic viscosity deviations, Δη were described by the Redlich–Kister polynomial expansion. The Δ Cp was negative for benzene and S-shaped for butan-1-ol, the VmE and Δη were low and negative. From the experimental values, the volume expansivity and the excess volume expansivity was calculated. The obtained results indicate that ionic liquid interactions with aromatic hydrocarbons are strong dependent on the packing effects and π–π interactions.
Author Urszula Domańska-Żelazna (FC / DPC)
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
, Maciej Zawadzki (FC / DPC)
Maciej Zawadzki,,
- Department Of Physical Chemistry
, Marek Królikowski (FC / DPC)
Marek Królikowski,,
- Department Of Physical Chemistry
Journal seriesZeitschrift Fur Physikalische Chemie-International Journal of Research in Physical Chemistry & Chemical Physics, ISSN 0942-9352
Issue year2013
Vol227
No2-3
Pages217-238
Publication size in sheets1.05
Keywords in Englishionic liquid, N-octylisoquinolinium bis{(trifluoromethyl)sulfonyl}imide, experimental heat capacity, density and viscosity, thermodynamics
ASJC Classification1606 Physical and Theoretical Chemistry
DOIDOI:10.1524/zpch.2013.0326
URL http://www.degruyter.com/view/j/zpch.2013.227.issue-2-3/zpch.2013.0326/zpch.2013.0326.xml?format=INT
Languageen angielski
File
zpch.2013.0326.pdf 1.99 MB
Score (nominal)15
Score sourcejournalList
ScoreMinisterial score = 15.0, 08-02-2020, ArticleFromJournal
Ministerial score (2013-2016) = 15.0, 08-02-2020, ArticleFromJournal
Publication indicators Scopus Citations = 6; GS Citations = 1.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 0.606; WoS Impact Factor: 2013 = 1.178 (2) - 2013=1.169 (5)
Citation count*1 (2015-03-08)
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