The separation behavior of rhenium from hydrochloric acid medium by a solution of TiOA in ionic liquid, [C 5 mim][NTf 2 ], was researched. At temperatures from 293.15 to 318.15 K, the equilibrium molalities of ReO 4 – were measured at ionic strength from 0.2 to 2.0 mol·kg –1 in the aqueous phase. The standard extraction constants K 0 at disparate temperatures were gained by the Pitzer polynomial approximation method. Thermodynamic quantities for the extraction procedure were also calculated.
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Zhou et al. (2019) studied this question.
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