Liquid-liquid extraction of U(VI) using malonamide in room temperature ionic liquid

被引：5
|
作者：
Xie, Zong-Bo [1 ]
Kang, Hai-Tao [1 ]
Chen, Zhong-Sheng [1 ]
Zhang, Sui-Hong [1 ]
Le, Zhang-Gao [1 ]
机构：
[1] E China Inst Technol, Dept Appl Chem, 418 Guanglan Rd, Nanchang 330013, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2016年 / 308卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Ionic liquid; Malonamide; Uranium; Extraction; SOLVENT-EXTRACTION; MECHANISMS; TRIVALENT; AM(III); NITRATE;
D O I：
10.1007/s10967-015-4471-0
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The extraction behavior of U(VI) from nitric acid medium by a solution of N,N-dimethyl-N,N-diphenylmalonamide (DMPMA) in the ionic liquid, BmimPF(6), was studied. The extractability was measured as a function of various parameters such as kinetics, phase ratio, the concentration of DMPMA, nitric acid and sodium nitrate, alkyl chain length of ionic liquid. The extractability from 5 M nitric acid by 0.35 M DMPMA/BmimPF(6) was found to be almost 100 %. Slope analysis of the experimental data suggests that the probable molecular structure of the extraction species is [UO2NO3(DMPMA)(2)](+), and the mechanism likely occurs by a cation exchange mode.
引用
收藏
页码：573 / 578
页数：6
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