Binary extraction of lanthanides (III) nitrates with carboxylates and dialkylphosphates of secondary and tertiary amines

Kalyakin, Sergey N.; Кузьмин, В. И.; Mulagaleeva, Marina A.

doi:10.1134/s0040579516050080

Cited by 5 publications

(1 citation statement)

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“…It has been reported that the extraction of REEs by the binary extractants is improved in the presence of carboxylates due to the solvation of extracted species in the organic phase [43,44]. Thus, the mixture of Cyanex 272 with caprylic acid was examined to improve the solubility of lanthanum extracted complexes.…”

Section: Introductionmentioning

confidence: 99%

Solvent Extraction of Lanthanides(III) in the Presence of the Acetate Ion Acting as a Complexing Agent Using Mixtures of Cyanex 272 and Caprylic Acid in Hexane

Белова¹,

Tsareva²,

Zakhodyaeva³

et al. 2021

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A new extraction system containing a mixture of Cyanex 272 and caprylic acid is proposed for the extraction and separation of lanthanides(III). It was shown that this system possesses a high level of extraction ability and capacity. The extraction of lanthanides(III) from chloride-acetate and nitrate-acetate media was investigated on an example of La(III). The composition of the extracted species was confirmed, based on the analysis of lanthanum(III) extraction isotherms. In the case of acetic-acetate aqueous solutions, a decrease in lanthanum(III) extraction efficiency was observed, due to the decreasing equilibrium pH of the aqueous phase in accordance with the cation-exchange mechanism. The composition of the synergistic mixture of Cyanex 272-caprylic acid established demonstrates highly efficient separation of rare-earth metal ions.

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Section: Introductionmentioning

confidence: 99%