摘要
采用分光光度法,对硝酸体系中1,1-二甲基肼还原Np(Ⅴ)的动力学进行了研究,求出了反应的动力学方程.实验结果表明:提高1,1-二甲基肼浓度、增加酸度、升高温度均有利于加快反应速率,离子强度对反应速率的影响很小.
Researches possible factors influencing the kinetics of neptunium reduction with 1,1-dimethylhydrazine in nitric acid system with spectrophotometry. The results show that the reaction rate can be accelerated by increasing 1,1-dimethylhydrazin concentration, temperature, and acidity. The apparent activation energy (Ea) of this reduction is (101.38 ± 4.74) kJ/mol. The influence of the ionic strength of solution and the concentration of ferric ion on reaction rate are neg- ligible.
出处
《江汉大学学报(自然科学版)》
2006年第2期25-26,84,共3页
Journal of Jianghan University:Natural Science Edition
关键词
1
1-二甲基肼
镎
还原
反应速率
1,1-dimethylhydrazine
neptunium
reduction
reaction rate
作者简介
张希祥(1972-),男,四川自贡人,工程师,主要从事核燃料及其材料的研究.