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

O. A. Zavalina; K. N. Dvoeglazov; E. Yu. Pavlyukevich

doi:10.1134/S1066362217040014

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

作者: Zavalina O.A.¹, Dvoeglazov K.N.², Pavlyukevich E.Y.²
隶属关系:
1. Mendeleev University of Chemical Technology of Russia
2. Bochvar High-Tech Research Institute of Inorganic Materials
期: 卷 59, 编号 4 (2017)
页面: 331-336
栏目: Article
URL: https://journals.rcsi.science/1066-3622/article/view/224012
DOI: https://doi.org/10.1134/S1066362217040014
ID: 224012

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The kinetics of the Pu(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 Pu, carbohydrazide, and HNO₃ is 1, 2.3, and–3, respectively. The activation energy of the reaction is 111 kJ mol^–1. The final reduced Pu form is Pu(III), with Pu(V) being an intermediate.