核化学与放射化学2011，Vol.33Issue(1)：1-5,5.
单甲基肼还原Np(Ⅴ)的反应动力学
Kinetics of Reaction Between Methylhydrazine and Neptunium( V )
李小该 1何辉 1叶国安 1唐洪彬 1蒋德祥 1李斌1
作者信息
- 1. 中国原子能科学研究院放射化学研究所,北京,102413
- 折叠
摘要
Abstract
The kinetics of redox reaction between methylhydrazine(MMH) and Np( V ) in nitric acid media was studied by spectrophotometry. Based on results about the influence of MMH concentration and acidity on the reaction, the rate equation of that redox reaction is presented as-dc(Np(V))/dt=kc(Np(V))c0.36(MMH) c(H+). The rate constant is 0. 004 79 (mol/L)-1.36/min at 35 ℃. Effects of ionic strength, c(U( Ⅵ )), and temperature were also investigated. The results show that ionic strength and c(U(Ⅵ)) have no obvious effect on the reaction but temperature has positive effect with activation energy value of 60.43 kJ/mol. The mechanism of the redox reaction was discussed.关键词
单甲基肼/Np(Ⅴ)/反应动力学/反应机理Key words
methylhydrazine/ Np(V )/ kinetics/ mechanism分类
化学化工引用本文复制引用
李小该,何辉,叶国安,唐洪彬,蒋德祥,李斌..单甲基肼还原Np(Ⅴ)的反应动力学[J].核化学与放射化学,2011,33(1):1-5,5.
