Kinetics of Np(V) Reduction with Carbohydrazide Catalyzed by Tc(VII) in the Presence of U(VI)

Kinetics of Np(V) Reduction with Carbohydrazide Catalyzed by Tc(VII) in the Presence of U(VI)

The kinetics of Np(V) reduction with carbohydrazide in nitric acid medium in the presence of Tc(VII) and U(VI) ions was studied by spectrophotometry. The reduced form of Np(IV) is unstable in time: reverse oxidation occurs, which accelerates with increase in the Tc(VII) ion concentration and tempera...

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Veröffentlicht in:Radiochemistry (New York, N.Y.) N.Y.), 2022, Vol.64 (2), p.143-150
Hauptverfasser: Dvoeglazov, K. N., Pavlyukevich, E. Yu, Filimonova, E. D., Alekseenko, V. N.
Format: Artikel
Sprache:eng
Schlagworte:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Ion concentration
Kinetics
Nitric acid
Nuclear Chemistry
Oxidation
Reduction
Spectrophotometry
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Zusammenfassung:The kinetics of Np(V) reduction with carbohydrazide in nitric acid medium in the presence of Tc(VII) and U(VI) ions was studied by spectrophotometry. The reduced form of Np(IV) is unstable in time: reverse oxidation occurs, which accelerates with increase in the Tc(VII) ion concentration and temperature. The rate of the reduction stage is significantly higher than the rate of reverse oxidation. The orders of both stages of the reaction were found for all components.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362222020047