Phase equilibria study of the (N-octylisoquinolinium thiocyanate ionic liquid + aliphatic and aromatic hydrocarbon, or thiophene) binary systems

Marta Królikowska , Monika Karpińska

Abstract

Binary liquid + liquid phase equilibria for 8 systems containing N-octylisoquinolinium thiocyanate, [C8iQuin][SCN] and aliphatic hydrocarbon (n-hexane, n-heptane), cyclohexane, aromatic hydrocarbon (benzene, toluene, ethylbenzene, n-propylbenzene) and thiophene have been determined using dynamic method. The experiment was carried out from room temperature to the boiling-point of the solvent at atmospheric pressure. For the tested binary systems the mutual immiscibility with an upper critical solution temperature (UCST) for {IL + aliphatic hydrocarbon, or thiophene} were observed. The immiscibility gap with lower critical solution temperature (LCST) for the {IL + aromatic hydrocarbon} were determined. The parameters of the LLE correlation equation for the tested binary systems have been derived using NRTL equation. The phase equilibria diagrams presented in this paper are compared with literature data for the corresponding ionic liquids with N-alkylisoquinolinium, or N-alkylquinolinium cation and with thiocyanate – based ionic liquids. The influence of the ionic liquid structure on mutual solubility with aliphatic and aromatic hydrocarbons and thiophene is discussed.
Author Marta Królikowska (FC / DPC)
Marta Królikowska,,
- Department Of Physical Chemistry
, Monika Karpińska (FC / DPC)
Monika Karpińska,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical Thermodynamics, ISSN 0021-9614
Issue year2013
Vol63
Pages128-134
Publication size in sheets0.5
Keywords in English Ionic liquid; [C8iQuin][SCN]; Phase diagram; NRTL equation; Separation process
ASJC Classification1606 Physical and Theoretical Chemistry; 2500 General Materials Science; 3107 Atomic and Molecular Physics, and Optics
DOIDOI:10.1016/j.jct.2013.04.011
URL http://www.sciencedirect.com/science/article/pii/S0021961413001365
Languageen angielski
File
1-s2.0-S0021961413001365-main.pdf 633.67 KB
Score (nominal)35
Score sourcejournalList
ScoreMinisterial score = 30.0, 23-12-2019, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 23-12-2019, ArticleFromJournal
Publication indicators Scopus Citations = 11; WoS Citations = 11; GS Citations = 2.0; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.234; WoS Impact Factor: 2013 = 2.423 (2) - 2013=2.399 (5)
Citation count*2 (2015-03-08)
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