【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.更多还原

【Abstract】 Researches possible factors influencing the kinetics of neptunium reduction with 1,1-dimethylhydrazine in nitric acid system with spectrophotometry.The results show that the re-action 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.更多还原