Project Details:
Database on liquid-liquid equilibria of binary mixtures of (ionic liquids and molecular compounds)
| Project No.: | 2011-065-3-500 |
| Start date: | 2012-07-01 |
| End date: | 0000-00-00 |
| Division: | Analytical Chemistry Division and Physical and Biophysical Chemistry Division |
The objective of this project is a compilation and critical evaluation of liquid-liquid equilibrium (mutual solubility) data of binary mixtures of ionic liquids mixed with molecular compounds. The present Task Group is not aware of such compilation to have been carried out so far.
Since ionic liquids are classified as novel designer and green solvents, an evaluation of their mutual solubilities with traditional solvents is of interest for different technological point of views. In fact, mutual solubilities of ionic liquids with molecular compounds are of critical importance in the design and optimization of liquid separation processes, as well as in environmental remediation. Due to the increasing number of published datasets, which range significantly in their quality and robustness, a critical evaluation of this data is needed urgently for the field to move into practical application. The proposed compilation will include a critical review of the apparatuses used to measure the solubility data. In addition, the data will be critically evaluated with the respect to the experimental techniques used as well as the purity of the ionic liquid/solvent measured. The compiled data will be also evaluated using a robust gnostic method as well as UNIFAC model parameters to provide a statistical analysis. Based upon the different analyses carried out during this project, a set of recommended values will be finally presented. Finally, a critical overview of the ionic liquids phase behavior in the presence of molecular compounds will be addressed to develop a structure-property relationship including the ion interactions and structure as well as the polar/associating nature of the molecular solvent. Such a database will provide a framework for process design and a critical assessment of the ability of ionic liquids to be used in separation processes.
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Being part of the IUPAC-NIST Solubility Data Series, this project outcome will be avaliable through the Journal of Physical and Chemical Reference data.
Last update 8 April 2013