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Separation of uranium from lanthanum in molecular and ionic organic liquids

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Abstract

We have investigated the separation of uranium from lanthanum in two molecular organic liquids (sulfolane, TMSO2; ethylene carbonate, EC) and in one organic ionic melt: ethylammonium nitrate (EAN). A separation is achieved by chemical oxidation and precipitation of oxides in TMSO2; in this medium, the part of uranium remaining in solution may be recovered by an electrochemical reduction. In EAN, it is required to add Li2O to initiate the oxides precipitation: the separation corresponds to the difference between the solubility products of UO3(s) and La2O3(s). Best results are obtained in EC where the insoluble phase corresponds to an U/La ratio equal to 186 instead of 1.7 in the initial conditions.

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References

  1. P. Speeckaert, Proc. Symp. Thermodyn. Nucl. Mater., Vienna, 1967, IAEA, p. 195.

  2. L. Martinot, J. Fuger,J. Less-Common Metals, 120 (1986) 255.

    Google Scholar 

  3. L. Morgan, L. Burger, R. Scheele, A. C. S. Symposium Series, Vol. 117 (1980) p. 233.

    Google Scholar 

  4. L. Martinot, D. Baré, C. Michaux,J. Radioanal. Nucl. Chem., Articles, 170 (1993) 389.

    Google Scholar 

  5. L. Martinot, D. Laeckman, L. Lopes, T. Materne, V. Müller,Alloys Compounds, 57 (1992) 119.

    Google Scholar 

  6. L. Martinot, Actinides, in: Handbook of the Physics and the Chemistry of the Actinides (North Holland), (Eds by A. Freeman and C. Keller), 1991, p. 241.

  7. J. Cabon, M. L'Her, M. Le Démazet,Bull. Soc. Chim. France, 5–6 (1975) 1022.

    Google Scholar 

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Author notes

  1. L. Lopes

    Present address: Junta Nacional de Investigaçao Cientifica e Technologica, Lisboa

  2. L. Martinot

    Present address: Research Associate of the Inter-University Institute for Nuclear Sciences, Brussels

Authors and Affiliations

  1. Laboratory of Analytical Chemistry and Radiochemistry, B 6, University of Liège, Sart Tilman, B-4000, Liège, Belgium

    L. Lopes, L. Martinot & C. Michaux

Authors
  1. L. Lopes
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  2. L. Martinot
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  3. C. Michaux
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Lopes, L., Martinot, L. & Michaux, C. Separation of uranium from lanthanum in molecular and ionic organic liquids. Journal of Radioanalytical and Nuclear Chemistry Letters 187, 99–105 (1994). https://doi.org/10.1007/BF02162655

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  • DOI: https://doi.org/10.1007/BF02162655

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