核化学与放射化学2013，Vol.35Issue(1)：24-28,5.DOI:10.7538/hhx.2013.35.01.0024
肼为还原剂催化还原U(Ⅵ)制备U(Ⅳ)的工艺条件
Platinum-Catalyzed Reduction of U(Ⅵ) With Hydrazine in Nitric Acid Solutions
李斌 1何辉 1丁伯发 1张秋月 1黄小红 1陈延鑫 1唐洪彬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 platinum-catalyzed reduction of U(Ⅵ) by hydrazine in HNO3 solutions was studied. The influence of hydrazine concentration, acidity, catalyst amounts and temperature on the reduction reaction was investigated. The optimal process parameters for the reduction of c(U) =0. 90 mol/L(25 mL) uranyl ion are 0. 80 mol/L HNO3, 1. 0 mol/L N2 H4 and 0. 2 g catalyst. More than 99% U(Ⅵ) is reduced in 3 h at 60 ℃.关键词
肼/铂黑/U(Ⅳ)/催化还原Key words
hydrazine/ platinum black/ U(Ⅵ)/ catalytic reaction分类
化学化工引用本文复制引用
李斌,何辉,丁伯发,张秋月,黄小红,陈延鑫,唐洪彬..肼为还原剂催化还原U(Ⅵ)制备U(Ⅳ)的工艺条件[J].核化学与放射化学,2013,35(1):24-28,5.
