Kinetics of Pu(VI) and Pu(IV) reduction with hydrazine organic derivatives in a perchloric acid solution

IF 1.6 3区 化学 Q3 CHEMISTRY, ANALYTICAL
I. A. Mikhaltsova, E. A. Gerber, A. M. Fedoseev, V. P. Shilov
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Abstract

The kinetics of Pu(VI) and Pu(IV) reduction by carbohydrazide and diformylhydrazine in a perchloric acid has been investigated spectrophotometrically. The reaction orders with respect to each reactant (plutonium, reductant and perchloric acid) have been determined. Final products of plutonium reduction, reaction stoichiometry and activation energy have been evaluated. The observed differences in reaction kinetics between perchloric/nitric acid highlight the distinct effects of medium composition on the redox behavior of plutonium. The insights gained in perchloric acid provide a foundation for understanding how complexation in nitric acid might modulate these reactions under industrial conditions during reprocessing of spent nuclear fuel.

Graphical Abstract

Abstract Image

高氯酸溶液中肼类有机衍生物对Pu(VI)和Pu(IV)的还原动力学
用分光光度法研究了高氯酸中碳酰肼和二甲酰肼对Pu(VI)和Pu(IV)的还原动力学。每种反应物(钚、还原剂和高氯酸)的反应顺序都已确定。对钚还原的最终产物、反应化学计量学和活化能进行了评价。观察到的高氯酸/硝酸反应动力学的差异突出了介质组成对钚氧化还原行为的明显影响。在高氯酸中获得的见解为理解在乏核燃料后处理的工业条件下硝酸络合如何调节这些反应提供了基础。图形抽象
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来源期刊
CiteScore
2.80
自引率
18.80%
发文量
504
审稿时长
2.2 months
期刊介绍: An international periodical publishing original papers, letters, review papers and short communications on nuclear chemistry. The subjects covered include: Nuclear chemistry, Radiochemistry, Radiation chemistry, Radiobiological chemistry, Environmental radiochemistry, Production and control of radioisotopes and labelled compounds, Nuclear power plant chemistry, Nuclear fuel chemistry, Radioanalytical chemistry, Radiation detection and measurement, Nuclear instrumentation and automation, etc.
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