Ruthenium-catalyzed oxidation of Np(IV) in nitric acid solutions

被引：1

作者：

Anan'Ev A.V. ^{[1
]}

Boltoeva M.Y. ^{[1
]}

Tyumentsev M.S. ^{[1
]}

Tananaev I.G. ^{[2
]}

机构：

[1] Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, Leninskii pr. 31

[2] Mayak Production Association, Federal State Unitary Enterprise, Ozersk

来源：

Radiochemistry | 2013年 / 55卷 / 2期

基金：

俄罗斯基础研究基金会;

关键词：

catalysis; nanoparticles; neptunium(IV); nitric acid; oxidation; ruthenium;

D O I：

10.1134/S1066362213020045

中图分类号：

学科分类号：

摘要：

Oxidation of Np(IV) with nitric acid in the presence of Ru/SiO2 catalysts was studied by spectrophotometry. The catalytic oxidation of Np(IV) in nitric acid solutions occurs even in the presence of hydrazine. The mechanism of Ru-catalyzed oxidation of Np(IV) with nitric acid was suggested on the basis of the kinetic data. The effect of the Ru nanoparticle size on the activation energy of the catalytic oxidation of Np(IV) was revealed. It shows that the heterogeneous-catalytic reaction is structure-sensitive (positive size effect). © 2013 Pleiades Publishing, Ltd.

引用

页码：158 / 161

页数：3

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