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HERO ID
1455311
Reference Type
Journal Article
Title
Physico-chemical properties and phase behaviour of pyrrolidinium-based ionic liquids
Author(s)
Domańska, U
Year
2010
Is Peer Reviewed?
Yes
Journal
International Journal of Molecular Sciences
ISSN:
1422-0067
EISSN:
14220067
Volume
11
Issue
4
Page Numbers
1825-1841
Language
English
PMID
20480044
DOI
10.3390/ijms11041825
Web of Science Id
WOS:000277119800029
Abstract
A review of the relevant literature on 1-alkyl-1-methylpyrrolidinium-based ionic liquids has been presented. The phase diagrams for the binary systems of {1-ethyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [EMPYR][CF(3)SO(3)] + water, or + 1-butanol} and for the binary systems of {1-propyl-1-methylpyrrolidinium trifluoromethanesulfonate (triflate) [PMPYR][CF(3)SO(3)] + water, or + an alcohol (1-butanol, 1-hexanol, 1-octanol, 1-decanol)} have been determined at atmospheric pressure using a dynamic method. The influence of alcohol chain length was discussed for the [PMPYR][CF(3)SO(3)]. A systematic decrease in the solubility was observed with an increase of the alkyl chain length of an alcohol. (Solid + liquid) phase equilibria with complete miscibility in the liquid phase region were observed for the systems involving water and alcohols. The solubility of the ionic liquid increases as the alkyl chain length on the pyrrolidinium cation increases. The correlation of the experimental data has been carried out using the Wilson, UNIQUAC and the NRTL equations. The phase diagrams reported here have been compared to the systems published earlier with the 1-alkyl-1-methylpyrrolidinium-based ionic liquids. The influence of the cation and anion on the phase behaviour has been discussed. The basic thermal properties of pure ILs, i.e., melting temperature and the enthalpy of fusion, the solid-solid phase transition temperature and enthalpy have been measured using a differential scanning microcalorimetry technique.
Keywords
1-alkyl-1-methylpyrrolidinium-based ionic liquids; (solid plus liquid) phase equilibria; water; alcohols; correlation; differential scanning microcalorimetry
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IRIS
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n-Butanol
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Source – January 2013 (private)
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PFAS Universe
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Web of Science
Pubmed
Trifluoromethanesulfonate
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