Solvent extraction of uranyl by N,N,N′,N′-tetraoctylsuccinylamide from nitric acid solution

被引：0
|
作者：
Peizhuo Hu
Lijuan Qian
Xu Zhou
Dengfang Pan
Wangsuo Wu
机构：
[1] Lanzhou University,School of Nuclear Science and Technology
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2013年 / 295卷
关键词：
Uranyl(VI); ,; ,; ′,; ′-tetraoctylsuccinylamide; Solvent extraction; Distribution ratio;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Synthesis and characterization of N,N,N′,N′-tetraoctylsuccinylamide (TOSA) was carried out and used for extraction of U(VI) from nitric acid solutions. The effect of different factors affecting the extraction distribution ratio (TOSA concentration, concentrations of nitric acid, salting-out agent LiNO3 concentration, equilibration time, temperature and effect of diluents) have been investigated. The results obtained indicated that TOSA have a great capability to extract uranyl with kerosene-1,3,5-trimethylbenzene than other diluents, it have a high extraction distribution ratios when the concentration of TOSA is lower and not found the third matter. It was found that the main extracted species is UO2(NO3)2·TOSA. The apparent equilibrium constant of extraction determined is (2.32 ± 0.31) L3/mol3 at (298 ± 1) K. The enthalpy of extraction is −35.20 ± 0.352 kJ/mol.
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页码：1209 / 1213
页数：4
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