Hydrolysis and Partial Recycling of a Chloroaluminate Ionic Liquid

Ming-Hong Fang, Li-Sheng Wang
2007 International Journal of Molecular Sciences  
Hydrolysis of the ionic liquid Et 3 NHCl-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
more » ... 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.
doi:10.3390/i8060470 fatcat:nprsoaj74narpbbfv335z7fa6u