- P-ISSN 1225-0163
- E-ISSN 2288-8985
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.
1. (a) Wasserscheid, P. and W. Keim, Angew, Chem. Int. Ed., 39, 3772-3789 (2000).
(b) P. J. Dyson, Transition Met. Chem., 27, 353-358 (2002).
2. J. S. Wilkes, J. A Levisky, R. A Wilson and C. L. Hussey, Inorg. Chem., 21, 1263-1264 (1982).
3. J. S Wilkes, M. J. Zaworotko and J. Chem. Soc. Chem. Commun., 965-967 (1992).
4. S. Zhang, X. Lu, Q. Zhou, X. Li and X. Zhang, lonic liquids physicochemical properties. 2008.
5. D. L. Boos, H. A. Adams, T. H. Hacha and J. E. Metcalfe. 21st, Electronics Components Conf., 33, 10-12(1971).
6. A. Nishino, A. Yoshida and I. Tanahashi, U.S. patent- 4562511, 1985.
7. A. Yoshida, A. Nishino and I. Tanahashi, U.S. patent- 4597028, 1986.
8. G. B. Appetecchi, S. Scaccia, C. Tizzani, F. Alessandrini and S. Passerini, J. Electrochem. Soc., 153(9), A1685-A1691 (2006).
9. M. J. Earle, C. M. Gordon, N. V. Plechkova, K. R. Seddon and T. Welton, Anal. Chem., 79, 758-764 (2007).
10. P. Nochemann, K. Binnemans and K. Driesen, Chem. Phys. Lett., 415, 131-136 (2005).