Journal article
Thermomorphic phase separation in ionic liquid-organic liquid systems – conductivity and spectroscopic characterization
Electrical conductivity, FT-Raman and NMR measurements are demonstrated as useful tools to probe and determine phase behavior of thermomorphic ionic liquid-organic liquid systems. To illustrate the methods, consecutive conductivity measurements of a thermomorphic methoxyethoxyethyl-imidazolium ionic liquid/1-hexanol system are performed in the temperature interval 25-80 degrees C using a specially constructed double-electrode cell.
In addition, FT-Raman and 1H-NMR spectroscopic studies performed on the phase-separable system in the same temperature interval confirm the mutual solubility of the components in the system, the liquid-liquid equilibrium phase diagram of the binary mixture, and signify the importance of hydrogen bonding between the ionic liquid and the hydroxyl group of the alcohol.
Language: | English |
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Publisher: | The Royal Society of Chemistry |
Year: | 2005 |
Pages: | 3052-3058 |
ISSN: | 14639084 and 14639076 |
Types: | Journal article |
DOI: | 10.1039/b505588a |
ORCIDs: | Riisager, Anders , Fehrmann, Rasmus and Berg, Rolf W. |