The separation of thorium and rare earth elements using [A336][NO3]: insight into a new extraction mechanism

被引：0
作者：
Xuan Fu
Fang Zhang
Qiang Wu
Yang Li
Qing-Gang Huang
Ze-Yi Yan
机构：
[1] Lanzhou University,Radiochemistry Laboratory, School of Nuclear Science and Technology
[2] Nuclear Chemistry,Key Laboratory of Special Function Materials and Structure Design, Ministry of Education
[3] Institute of Modern Physics,undefined
[4] Chinese Academy of Sciences,undefined
[5] Lanzhou University,undefined
来源：
Journal of Radioanalytical and Nuclear Chemistry | 2021年 / 327卷
关键词：
Separation; Th(IV); Rare earths; Extraction mechanism; A336; Ionic liquid;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this study, extraction and separation of thorium(IV) and a few representative rare earths in HNO3 media was evaluated using trioctylmethylammonium nitrate ([A336][NO3]) ionic liquid. An unexpected novel extraction mechanism was identified based on the studies in the slope analysis and ESI–MS spectrum. The trimer of [A336][NO3] was confirmed to dominate the extraction reaction by ESI–MS spectrum before and after the extraction. The extraction efficiency of La(III), Eu(III) and Lu(III) by [A336][NO3] are much lower than Th(IV) in acid medium, which means that it is possible to separate thorium from rare earths or the rare earth ores by using [A336][NO3].
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页码：1251 / 1258
页数：7
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共 126 条
[1]  
Nasab ME(2014)Solvent extraction separation of uranium(VI) and thorium(IV) with neutral organophosphorus and amine ligands Fuel 116 595-600
[2]  
Rao A(2016)Extraction of thorium employing Sep Purif Technol 161 159-164
[3]  
Tomar BS(2012), Nature 492 31-33
[4]  
Ashley SF(2016)-dialkyl amide into room temperature ionic liquid followed by supercritical carbon dioxide stripping Hydrometallurgy 166 160-166
[5]  
Parks GT(2011)Thorium fuel has risks Hydrometallurgy 106 141-147
[6]  
Nuttall WJ(2017)Systematic research on solvent extraction process for extracting Hydrometallurgy 167 107-114
[7]  
Boxall C(2019)U from irradiated thorium Sep Purif Technol 213 322-327
[8]  
Grimes RW(2007)Determination of optimum process conditions for the separation of thorium and rare earth elements by solvent extraction J Hazard Mater 145 315-322
[9]  
Li Z(2017)Selective extraction and separation of Ce(IV) from thorium and trivalent rare earths in sulfate medium by an α-aminophosphonate extractant Ind Eng Chem Res 56 6515-6519
[10]  
Zhao H(2020)Synthesis of tailored bis-succinamides and comparison of their extractability for U(VI), Th(IV) and Eu(III) Inorg Chem 59 14218-14228
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