Effect of Cation Structure in Trifluoromethanesulfonate-Based Ionic Liquids: Density, Viscosity, and Aqueous Biphasic Systems Involving Carbohydrates as “Salting-Out” Agents

Marcin Okuniewski , Kamil Paduszyński , Urszula Domańska-Żelazna


This work reports new experimental data on density and viscosity of pure ionic liquids (ILs) based on trifluoromethanesulfonate anion, [CF3SO3]. In particular, a cation-core effect on these basic solvent characteristics is demonstrated and investigated. The studied structures comprise representative 1-butyl-1-methylpyrrolidinium, 1-butyl-1-methylpiperidinium, and 1-butyl-3-methylpyridinium cations. In the main part of this work, the possibility to form aqueous biphasic systems (ABS) based on the studied ILs and four carbohydrates, namely, d-(+)-glucose, d-(−)-fructose, d-sorbitol, and xylitol, was tested. Liquid–liquid equilibrium phase diagrams at T = 298.15 K, including binodal curves and tie lines, were determined for 12 distinct ABS, and then, an impact of the type of cation of IL (pyrrolidinium, piperidinium, and pyridinium) on these properties was elucidated and discussed in terms of the molecular structure of both ILs and carbohydrates and molecular interactions between them. Moreover, an effect of temperature on ABS formation is also presented for a selected representative system.
Author Marcin Okuniewski ZChF
Marcin Okuniewski,,
- Department Of Physical Chemistry
, Kamil Paduszyński ZChF
Kamil Paduszyński,,
- Department Of Physical Chemistry
, Urszula Domańska-Żelazna ZChF
Urszula Domańska-Żelazna,,
- Department Of Physical Chemistry
Journal seriesJournal of Chemical and Engineering Data, ISSN 0021-9568
Issue year2016
Publication size in sheets0.5
URL http://pubs.acs.org/doi/abs/10.1021/acs.jced.5b00931
Languageen angielski
acs%2Ejced%2E5b00931_2.pdf (file archived - login or check accessibility on faculty) acs%2Ejced%2E5b00931_2.pdf 873.78 KB
Score (nominal)30
ScoreMinisterial score = 30.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.323 (2) - 2016=2.448 (5)
Citation count*0
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.