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Published on: November 27, 2015
Metal extraction with a short-chain imidazolium nitrate ionic liquid
Daphne Depuydt1, Arne Van den Bossche, Wim Dehaen
1KU Leuven, Department of Chemistry, Celestijnenlaan 200F, P.O Box 2404, B-3001 Heverlee, Belgium. Koen.Binnemans@kuleuven.be.
Abstract:
A short-chain symmetrical dihexyl imidazolium nitrate ionic liquid for conventional solvent extraction of metals was developed. Rare earths were found to be preferentially extracted over 1st row transition metals leading to the application of the ionic liquid system for separation of the Sm(iii)/Co(ii) and La(iii)/Ni(ii) pairs, which are relevant for the recycling of SmCo magnets and NiMH batteries.
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