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Extraction of thorium and cerium (III) chlorides by neutral organophosphorus solvents

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Summary

The extraction of thorium and trivalent cerium chlorides by tri-n-butyl phosphate and di-isoamylmethyl phosphonate has been investigated as a function of hydrochloric acid molarity in the aqueous phase and solvent concentration in the organic phase. The comparative stability of the extractable metal complexes with the two solvents has been also estimated. The second solvent has been recommended, instead of the first, for the separation of thorium and the rare earth elements from hydrochloric acid media.

Zusammenfassung

Die Extraktion von Thorium- und Cer(III)-chloriden mit Hilfe von Tri-n-butylphosphat und Di-isoamylmethyl-phosphonat wurde in Abhängigkeit von der HCl-Konzentration in der wäßrigen und der Lösungsmittelkonzentration in der organischen Phase untersucht. Die Stabilität der gebildeten Metallkomplexe wurde bestimmt. Zur Abtrennung von Thorium und Seltenen Erden aus salzsaurem Medium wird Di-isoamylmethyl-phosphonat empfohlen.

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Authors and Affiliations

  1. Nuclear Chemistry Department, Atomic Energy Establishment, Cairo, UAR

    A. Alian

  2. Radiochemistry Division, Faculty of Chemistry Moscow State, University, Moscow, USSR

    K. B. Zaborenko

Authors
  1. A. Alian
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  2. K. B. Zaborenko
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Alian, A., Zaborenko, K.B. Extraction of thorium and cerium (III) chlorides by neutral organophosphorus solvents. Z. Anal. Chem. 238, 267–273 (1968). https://doi.org/10.1007/BF00499726

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  • DOI: https://doi.org/10.1007/BF00499726

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