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

被引：21
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.
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页码：423 / 429
页数：7
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