核化学与放射化学2016，Vol.38Issue(6)：337-341,5.DOI:10.7538/hhx.2016.38.06.0337
30%TB P/煤油-硝酸溶液体系中镎的化学行为
Chemical Behavior of Neptunium in the System of 30%TBP/Kerosene-Nitric Acid Solution
摘要
Abstract
In order to understand the chemical behavior of neptunium during the extraction process,the oxidation behavior of Np(Ⅴ)to Np(Ⅵ)in nitric acid solution and the extrac-tion performance of Np(Ⅵ)by 30%TBP/kerosene was studied by single stage extraction. The experiment results indicate that the increasing of the concentrations of nitric acid and nitrous acid are in favor of the production of Np(Ⅵ).The reaction rate of Np(Ⅴ)to Np(Ⅵ) by oxidation increases with increasing the reaction temperature.The simulated experiment on the mixer-setter set indicates that the extraction ratio of neptunium in 1 A extraction section is approximately 80% when the HNO2 concentration in 1AX is 0.01 mol/L,the extraction temperature is 45 ℃ and the HNO3 concentration in 1AF is 3.5 mol/L HNO3 .关键词
镎/萃取/氧化还原反应/共去污/PUREX流程Key words
neptunium/extraction/redox/co-decontamination/PUREX process分类
化学化工引用本文复制引用
刘占元,张虎,刘方,周贤明,王日腾,李丽..30%TB P/煤油-硝酸溶液体系中镎的化学行为[J].核化学与放射化学,2016,38(6):337-341,5.基金项目
国家自然科学基金资助项目(91326111) （91326111）
