Metal Recovery from Spent Samarium-Cobalt Magnets Using a Trichloride Ionic Liquid.

ABSTRACT: Recycling of samarium-cobalt (SmCo) magnets is essential due to the limited resources of the mentioned metals and their high economic importance. The ionic liquid (IL) trihexyltetradecylphosphonium trichloride, [P_666,14][Cl₃], which can safely store chlorine gas in the form of the trichloride anion, was used as an oxidizing solvent for the recovery of metals from spent SmCo magnets. The dissolution was studied considering various mixtures of the ILs [P_666,14][Cl₃] and [P_666,14]Cl, solid-to-liquid ratios and different temperatures. The results showed that the maximum capacity of [P_666,14][Cl₃] for SmCo magnets was 71 ± 1 mg/g of [P_666,14][Cl₃], in the presence of an extra source of coordinatin

SUBMITTER: Li X 

PROVIDER: S-EPMC6488128 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature