Kinetic study on the transfer mechanism of uranyl(VI) ions using N,N,N′,N′-tetrabutyladipicamide from nitric acid media

被引：0
|
作者：
Wang, YS [1 ]
Tan, XF
Sun, SX
机构：
[1] Chinese Acad Sci, S China Sea Inst Oceanol, Guangzhou 510301, Peoples R China
[2] Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
[3] Shandong Univ, Dept Chem, Jinan 250100, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2001年 / 249卷 / 03期
关键词：
D O I：
10.1023/A:1013210718365
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
By using stirred-cell method as experimental technique, the kinetic transfer mechanism of UO22+ with N,N,N ' ,N ' -tetrabutyladipicamide (TBAA) from nitric acid solutions into toluene was studied. The different conditions effecting the extraction rate constants (k ' (f) and k ' (b)) were investigated, such as UO22+ concentration, HNO3 concentration, TBAA concentration, temperature and agitation speed. It was found that the extraction process was controlled by the diffusion of UO2(NO3)(2). 2TBAA from the liquid-liquid surface into the organic phase in the range of the experimental concentration of HNO3. The extraction rate was found to be of pseudo-first order with respect to the concentration of uranium(VI).
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收藏
页码：625 / 628
页数：4
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