Kinetics of electrochemical oxidation of neptunium ions in nitric acid solutions containing potassium phosphotungstate K10P 2W17O61

被引：0

作者：

Baranov A.A. ^{[1
]}

Erin E.A. ^{[1
]}

Nagaitseva L.V. ^{[1
]}

Chistyakov V.M. ^{[1
]}

机构：

[1] Research Institute of Nuclear Reactors, State Research Center, Public Joint-Stock Company, Ulyanovsk oblast 433510

来源：

Radiochemistry | 2011年 / 53卷 / 2期

关键词：

electrochemical oxidation; neptunium; nitric acid; potassium phopshotungstate;

D O I：

10.1134/S1066362211020081

中图分类号：

学科分类号：

摘要：

The kinetics of electrochemical oxidation of Np(IV) and Np(V) ions on a smooth platinum electrode in a 1 M HNO3 solution containing potassium phosphotungstate K10P2W17O61 (KPW) was studied by spectrophotometry. For the redox reactions under consideration, the rate laws were determined, the rate constants were calculated, and the schemes of transformations of Np ions were suggested. The electrochemical oxidation of Np(IV) and Np(V) is described by the first-order rate law with respect to the Np(IV) and Np(V) concentrations, respectively. The rate constants of these reactions are close and comparable with the rate constant of the Np(V) disproportionation. © 2011 Pleiades Publishing, Ltd.

引用

页码：164 / 167

页数：3

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