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Hydrolysis and Partial Recycling of a Chloroaluminate Ionic Liquid
School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing, China
* Author to whom correspondence should be addressed.
Received: 14 March 2007; in revised form: 11 May 2007 / Accepted: 22 May 2007 / Published: 4 June 2007
Abstract: Hydrolysis of the ionic liquid Et3NHCl-2AlCl3 and a process for recycling thetriethylamine were studied. When the hydrolysis was carried out at a relatively hightemperature, the released HCl could be absorbed more easily. With addition of sodiumhydroxide to the aqueous hydrolysis solution, a feasible process for recycling triethylaminewas developed, involving first distillation of triethylamine, followed by filtration of thealuminium hydroxide. The yield of recovered triethylamine was about 95%. Thetriethylhydrogenammonium chloride prepared from the recycled triethylamine was of goodpurity and could be reused to synthesize new chloroaluminate ionic liquids.
Keywords: Ionic liquid; hydrolysis; triethylhydrogenammonium chloride; triethylamine recovery.
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Fang, M.-H.; Wang, L.-S. Hydrolysis and Partial Recycling of a Chloroaluminate Ionic Liquid. Int. J. Mol. Sci. 2007, 8, 470-477.
Fang M-H, Wang L-S. Hydrolysis and Partial Recycling of a Chloroaluminate Ionic Liquid. International Journal of Molecular Sciences. 2007; 8(6):470-477.
Fang, Ming-Hong; Wang, Li-Sheng. 2007. "Hydrolysis and Partial Recycling of a Chloroaluminate Ionic Liquid." Int. J. Mol. Sci. 8, no. 6: 470-477.