Reduction kinetics of Pu(IV) and Np(VI) by N,N-dimethylhydrazine, and its potential application in nuclear fuel reprocessing

被引：15

作者：

Ban, Y. ^{[1
]}

Asakura, T. ^{[1
]}

Morita, Y. ^{[1
]}

机构：

[1] Japan Atom Energy Agcy, Nucl Sci & Engn Directorate, Res Grp Aqueous Separat Proc Chem, Ibaraki 3191195, Japan

来源：

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2009年 / 279卷 / 02期

关键词：

PU IONS; HYDROXYLAMINE DERIVATIVES; HYDRAZINE DERIVATIVES; NITRIC-ACID; NP; NEPTUNIUM; BUTYRALDEHYDE; PLUTONIUM;

D O I：

10.1007/s10967-007-7262-4

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Reduction kinetics of Pu(IV) by N,N-dimethylhydrazine (NNDMH) were studied by spectrophotometry, and the reduction rate equation in 3M (mol/dm(3)) nitric acid was obtained. The reduction properties of NNDMH for U(VI), Np(VI), and Pu(IV) was studied in the mixture solution of trin-butylphosphate diluted to 30 vol.% by n-dodecane (30% TBP) and 3M nitric acid. It was confirmed that NNDMH selectively reduce Np(VI) to Np(V) without affecting the valences of U(VI) and Pu(IV) in a few minutes. Numerical simulation indicated that 99.9% of Np was separated from U and Pu applying NNDMH for a mixer-settler.

引用

页码：423 / 429

页数：7

共 20 条

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