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Kinetics of Np(VI) reduction with carbohydrazide in nitric acid

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Abstract

The kinetics of the Np(VI) reduction with carbohydrazide in nitric acid solutions was studied by spectrophotometry. The reaction rate increases with increasing carbohydrazide concentration and temperature and decreases with increasing HNO3 concentration. The reaction order with respect to Np, carbohydrazide, and HNO3 is 1, 1.15, and–1.35, respectively. The activation energy of the reaction is 85 kJ mol–1.

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Authors and Affiliations

  1. Mendeleev University of Chemical Technology of Russia, Miusskaya pl. 9, Moscow, 125047, Russia

    O. A. Zavalina & S. I. Stepanov

  2. Bochvar High-Tech Research Institute of Inorganic Materials, ul. Rogova 5a, Moscow, 123060, Russia

    K. N. Dvoeglazov & E. Yu. Pavlyukevich

Authors
  1. O. A. Zavalina
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  2. K. N. Dvoeglazov
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  3. E. Yu. Pavlyukevich
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  4. S. I. Stepanov
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Correspondence to K. N. Dvoeglazov.

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Original Russian Text © O.A. Zavalina, K.N. Dvoeglazov, E.Yu. Pavlyukevich, S.I. Stepanov, 2017, published in Radiokhimiya, Vol. 59, No. 5, pp. 397–401.

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Zavalina, O.A., Dvoeglazov, K.N., Pavlyukevich, E.Y. et al. Kinetics of Np(VI) reduction with carbohydrazide in nitric acid. Radiochemistry 59, 453–457 (2017). https://doi.org/10.1134/S1066362217050034

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  • DOI: https://doi.org/10.1134/S1066362217050034

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