Modelling Np(IV) Solvent Extraction between 30% Tri-Butyl Phosphate and Nitric Acid in the Presence of Simple Hydroxamic Acids
Modelling Np(IV) Solvent Extraction between 30% Tri-Butyl Phosphate and Nitric Acid in the Presence of Simple Hydroxamic Acids
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建模%20Np(IV)%20溶剂%20萃取%20之间%2030%%20三丁基%20磷酸盐%20和%20硝酸%20酸%20in%20%20存在%20%20简单%20羟肟酸%20酸
DOI：
10.1080/07366299.2011.539120
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发表时间：
2011
影响因子：
2
通讯作者：
R. Taylor
中科院分区：
文献类型：
--
作者：
M. Sarsfield;H. Sims;R. Taylor
Formo-和aceto-羟肟酸是将磷酸三丁酯相中的四价锕离子溶出到硝酸中的有效试剂。一个描述锕系（IV）离子分配的模型已经推导出来，计算了水相和溶剂相的反应，包括与硝酸盐和羟酸盐离子形成的络合物。在乙酰羟酸盐离子存在的情况下，Np（IV）的预测分布比与实验数据进行了比较。此外，Np（IV）离子与硝酸盐离子（εNp4+-NO3−）的相互作用系数为0.473（±0.004）kgmol−1。
Abstract Formo- and aceto-hydroxamic acids are very effective reagents for stripping tetravalent actinide ions from a tri-butyl phosphate phase into nitric acid. A model describing the partitioning of actinide (IV) ions has been derived accounting for reactions in the aqueous and solvent phases, including complex formation with nitrate and hydroxamate ions. Predicted distribution ratios for Np(IV) are compared with experimental data in the presence of aceto-hydroxamate ions. Additionally, a value of 0.473 (±0.004) kgmol−1 for the Np(IV) ion interaction coefficient with nitrate ions (εNp4+-NO3−) was determined.