Competitive complexation of solid lanthanide nitrates with tri-n-butyl phosphate in n-hexane

被引：7
|
作者：
Wang, Zhuangfei [1 ]
Liu, Tingting [2 ]
He, Xihong [1 ]
Zhu, Liyang [1 ]
He, Hui [1 ]
机构：
[1] China Inst Atom Energy, Dept Radiochem, Beijing 102413, Peoples R China
[2] Harbin Engn Univ, Coll Nucl Sci & Technol, Harbin 150001, Peoples R China
来源：
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY | 2017年 / 311卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Lanthanide nitrate; n-Hexane; Separation factor; Competitive complexation; SUPERCRITICAL-FLUID EXTRACTION; URANIUM; SEPARATION; ACTINIDES; RECOVERY; CO2;
D O I：
10.1007/s10967-016-5027-7
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
Competitive complexation of solid lanthanide nitrates with tri-n-butyl phosphate (TBP) in n-hexane was studied by spectroscopic methods. For light lanthanides binary system (Nd-Pr), they complexed with TBP equally, leading to a low separation factor. However, distinct different behavior was observed for light-heavy lanthanides binary system (Nd-Ho). Heavy lanthanide Ho(NO3)(3)center dot 6H(2)O complexed preferentially with TBP, resulting in a much higher separation factor. The separation factor was low during H2O stripping of lanthanides from their complexes in n-hexane, even thought, the tendency of stripping more light lanthanide was also observed.
引用
收藏
页码：483 / 489
页数：7
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