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Reduction of Np(V) with Tetravalent Uranium in HNO3 Solutions Containing Hydrazine and Technetium Ions

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Abstract

The valence behavior of neptunium in the reaction of Np(V) with U(IV) in HNO3 solutions containing hydrazine and Tc(VII) ions has been studied. It was found that Np(V) is reduced to Np(IV) in two successive stages differing in the rates, after which the formed Np(IV) is oxidized to the pentavalent state. Simultaneously with the Np(V) reduction, complete oxidation of U(IV) occurs. Kinetic equations describing the rates of Np(V) reduction and U(IV) oxidation are established, and possible schemes of these reactions are studied.

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Notes

  1. In conditions of our experiments, the completion time of the reaction 2NpO22–+ 2N2H5+ → 2NpO2+ + 2NH4++N2+2H+ did not exceed 15 min.

REFERENCES

  1. Koltunov, V.S., Marchenko, V.I., Nikiforov, A.S., Smelov, V.S., Shmidt, V.S., Gomonova, T.V., Polunin, A.K., and Kondrat’ev, B.A., At. Energ., 1986, vol. 60, no.1, pp. 35–41.

    Article  CAS  Google Scholar 

  2. Marchenko, V.I., Dvoeglazov, K.N., and Volk, V.I., Radiochemistry, 2009, vol. 51, no. 4, pp. 289–302.

    Article  Google Scholar 

  3. Koltunov, V.S., and Gomonova, T.V., Radiokhimiya, 1991, vol. 33, no. 5, pp. 107–117.

    CAS  Google Scholar 

  4. Koltunov, V.S., Zaitseva, L.L., and Tikhonov, M.F., Radiokhimiya, 1980, vol. 22, no. 5, pp. 671–678.

    Google Scholar 

  5. Garraway, J., and Wilson, P., J. Less-Common Met., 1984, vol. 97, no. 1, pp. 191–203.

    Article  CAS  Google Scholar 

  6. Spitsyn, V.I., Kryuchkov, S.V., and Kuzina, A.F., Radiokhimiya, 1983, vol. 25, no. 4, pp. 497–502.

    CAS  Google Scholar 

  7. Ramazanov, L.M., Suslov, Yu.P., and Borovinskii, V.A., Radiokhimiya, 1984, vol. 26, no. 4, pp. 370–373.

    CAS  Google Scholar 

  8. Zhou, X., Ye, G., Zhang, H., Li, L., Luo, F., and Meng, Z., Radiochim. Acta, 2014, vol. 102, no. 1/2, pp. 111–116.

    Article  CAS  Google Scholar 

  9. Marchenko, V.I., Zhuravleva, G.I., Dvoeglazov, K.N., and Savilova, O.A., Khim. Tekhnol., 2008, vol. 9, no. 2, pp. 61–67.

    Google Scholar 

  10. Koltunov, V.S., Marchenko, V.I., Frolov, K.M., Sinev, M.Yu., Shepelkova, M.P., Rodyushkin, S.P., and Zhuravleva G.I., Abs tracts of Papers, Int. Conf. Actinides’89, Tashkent (USSR), September 24–29, 1989, Moscow: Nauka, 198, p. 353.

    Google Scholar 

  11. Redkie elementy v yadernom toplivnom tsikle. Monografiya (Rare Elements in the Nuclear Fuel Cycle: A Monograph), Troshkina, I.D., Ozawa, M., and German, K.E., Eds., Moscow: Mendeleev University of Chemical Technology, 2018.

  12. Turney, T., and Wright G., Chem. Rev., 1959, vol. 59, no. 3, pp. 497–513.

    Article  CAS  Google Scholar 

  13. Zelverte, A., CEA-Rapp., 5443, France, 1988.

  14. Suslov, Yu.P., Ramazanov, L.M., and Borovinskii, V.A., Radiokhimiya, 1986, vol. 28, no. 2, pp. 177–185.

    CAS  Google Scholar 

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Authors and Affiliations

  1. Bochvar High-Technology Scientific Research Institute for Inorganic Materials, 123098, Moscow, Russia

    V. I. Marchenko, O. A. Savilova & K. N. Dvoeglazov

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  1. V. I. Marchenko
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  2. O. A. Savilova
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  3. K. N. Dvoeglazov
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Correspondence to K. N. Dvoeglazov.

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Translated from Radiokhimiya, No. 3, pp. 236–242, April, 2021 https://doi.org/10.31857/S0033831121030059

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Marchenko, V.I., Savilova, O.A. & Dvoeglazov, K.N. Reduction of Np(V) with Tetravalent Uranium in HNO3 Solutions Containing Hydrazine and Technetium Ions. Radiochemistry 63, 283–289 (2021). https://doi.org/10.1134/S106636222103005X

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  • DOI: https://doi.org/10.1134/S106636222103005X

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