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The analytical study on synthesis and purification of high purity ionic liquid, 1-ethyl-3-methylimidazolium tetrafluoroborate
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2011, v.24 no.6, pp.477-483
https://doi.org/10.5806/AST.2011.24.6.477
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(2011). The analytical study on synthesis and purification of high purity ionic liquid, 1-ethyl-3-methylimidazolium tetrafluoroborate. Analytical Science and Technology, 24(6), 477-483, https://doi.org/10.5806/AST.2011.24.6.477
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Abstract
This work is on the synthesis of EMI-BF4 (1-ethyl-3-methylimidazolium tetrafluoroborate) and purification of spectroscopic grade using aluminium oxide method, activated charcoal method, and liquid/liquid fractional extraction method in order to make supercapacitor finally. But the aluminum oxide method and the activated charcoal method were not suitable for obtaining high-purity ionic liquids. The liquid/liquid fractional distillation method turned out that as the concentration of solvent (H_2O) was increased, the higher purity of EMI-BF_4 was obtained and the electrical capacity of this compound was increased to higher value. When the solvent was changed to from methylene chloride to 1,2-dichloroethane, the higher purity of EMI-BF_4 was obtained.
- keywords
- ionic liquids, supercapacitor, 1-Ethyl-3-methylimidazolium tetrafluoroborate
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