Abstract
A new class of task-specific ionic liquids (TSILs) based on the covalent attachment of imidazolium cations to a monoaza-crown ether fragment has been synthesized and characterized. The efficacy of these TSILs for the biphasic extraction of Cs+ and Sr2+ from aqueous solutions has been evaluated. The extraction properties of these TSILs can be influenced by the structures of the covalently attached imidazolium cations, which highlight the possibilities to enhance or tune the selectivities of crown ethers toward target ionic species through the covalent coupling with the imidazolium cations.
Original language | English |
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Pages (from-to) | 195-199 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 418 |
Issue number | 1-2 |
DOIs | |
State | Published - Jul 20 2006 |
Funding
This research was supported by the Environmental Management Science Program of the Office of Science and Environmental Management, U.S. Department of Energy, under Contract DE-AC05-0096OR22725 with Oak Ridge National Laboratory, managed by UT-Battelle, LLC. The authors would like to thank Dr. Gregory B. Hurst of Chemical Sciences Division at the Oak Ridge National Laboratory for performing MALDI-MS measurements.
Keywords
- Aza-crown ether
- Ionic liquids
- Solvent extraction