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The extraction of uranium (IV) from sulphuric acid by tri-octylamine in benzene

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Summary

The extraction of U(IV) from aqueous sulphuric acid media by TOA in benzene has been studied as a function of the sulphuric acid concentration and the concentration of TOA in the organic phase. The extraction may be represented by an equation such as H2U(SO4)3+(R3NH)2SO4=(R3NH)2U(SO4)3+H2SO4 The results for extraction from mixtures of U(VI) and U(IV) suggest that U(VI) forms a much more stable complex with TOA. Osmometric measurements on solutions of the U(IV)-complex in the organic phase indicate a tendency of this complex to aggregate.

Zusammenfassung

Die Extraktion von U(IV) aus Schwefelsäure wurde in Abhängigkeit von der Säurekonzentration sowie der Trioktylamin-Konzentration untersucht. Die dabei ablaufende Reaktion läßt sich wie folgt formulieren: H2U(SO4)3+(R3NH)2SO4=(R3NH)2U(SO4)3+H2SO4 Die Ergebnisse der Extraktion aus Mischungen von U(IV) und U(VI) zeigen, daß U(VI) mit TOA einen stabileren Komplex bildet. Die osmometrischen Messungen in U(IV)-Komplex-Lösungen lassen eine Assoziation des Komplexes annehmen.

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References

  1. E. R. Schmid and W. Pfannhauser, Mikrochim. Acta [Wien]1971, 434.

  2. E. R. Schmid, Mh. Chem.101, 1856 (1970).

    Google Scholar 

  3. E. R. Schmid and W. Pfannhauser, Mh. Chem.102, 1317 (1971).

    Google Scholar 

  4. G. Koch and E. Schwind, J. Inorg. Nucl. Chem.28, 571 (1966).

    Google Scholar 

  5. A. S. Wilson and W. E. Keder, J. Inorg. Nucl. Chem.18, 259 (1961).

    Google Scholar 

  6. O. de Coninck, Ann. chim. phys.28, 5 (1903).

    Google Scholar 

  7. R. J. Meyer and H. Nachod, Ann. chim.440, 190 (1924).

    Google Scholar 

  8. K. A. Allen, J. Phys. Chem.60, 239 (1956).

    Google Scholar 

  9. C. Deptula and S. Minc, Nukleonika10, 355 (1965).

    Google Scholar 

  10. J. W. Rody and C. F. Coleman, J. Inorg. Nucl. Chem.30, 1975 (1968).

    Google Scholar 

  11. Z. B. Maksimovic and R. G. Puzic, J. Inorg. Nucl. Chem.34, 1031 (1972).

    Google Scholar 

  12. A. M. Chekmarev, A. M. Rozen, and G. A. Yagodin, Zh. Fiz. Khim.5, 1005 (1966).

    Google Scholar 

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Authors and Affiliations

  1. Institute “Jozef Stefan”, University of Ljubljana, Jamova 39, Ljubljana, Yugoslavia

    K. Južnič & Š. Fedina

Authors
  1. K. Južnič
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  2. Š. Fedina
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Južnič, K., Fedina, Š. The extraction of uranium (IV) from sulphuric acid by tri-octylamine in benzene. Mikrochim Acta 62, 39–44 (1974). https://doi.org/10.1007/BF01271414

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  • DOI: https://doi.org/10.1007/BF01271414

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