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Int. J. Mol. Sci. 2007, 8(6), 470-477; doi:10.3390/i8060470
Article

Hydrolysis and Partial Recycling of a Chloroaluminate Ionic Liquid

 and *
School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing, China
* Author to whom correspondence should be addressed.
Received: 14 March 2007 / Revised: 11 May 2007 / Accepted: 22 May 2007 / Published: 4 June 2007
(This article belongs to the Special Issue Ionic Liquids)
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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. Ionic liquid; hydrolysis; triethylhydrogenammonium chloride; triethylamine recovery.
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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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.

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