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Organo-niobate Ionic Liquids: Synthesis, Characterization and Application as Acid Catalyst in Pechmann Reactions
Int. J. Mol. Sci. 2007, 8(6), 470-477; doi:10.3390/i8060470

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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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) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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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