Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 8, Issue 6, Pages 470-477Publisher
MDPI
DOI: 10.3390/i8060470
Keywords
ionic liquid; hydrolysis; triethylhydrogenammonium chloride; triethylamine recovery
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Hydrolysis of the ionic liquid Et3NHCl-2AlCl(3) and a process for recycling the triethylamine were studied. When the hydrolysis was carried out at a relatively high temperature, the released HCl could be absorbed more easily. With addition of sodium hydroxide to the aqueous hydrolysis solution, a feasible process for recycling triethylamine was developed, involving first distillation of triethylamine, followed by filtration of the aluminium hydroxide. The yield of recovered triethylamine was about 95%. The triethylhydrogenammonium chloride prepared from the recycled triethylamine was of good purity and could be reused to synthesize new chloroaluminate ionic liquids.
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