A novel extractant bis(2-ethylhexyl) ((2-ethylhexylamino)methyl)phosphine oxide for cerium(IV) extraction and separation from sulfate medium

• 作者: Mingxia Huang Wuping Liao Yongmei Fu Youcai Lu Zhongjun Li
• 来源期刊: 稀土学报（英文版）
• 年，卷（期）: 2020,（12）
• 所属期刊栏目: CHEMISTRY AND HYDROMETALLURGY
• 页码范围: 1330-1336
• 页数: 7页
• 语种: 英文

摘要

By introducing the amine group into phosphorus extractant, a novel aminophosphine compound bis(2-ethylhexyl) ((2-ethylhexylamino)methyl) phosphine oxide (DEHAPO, abbreviated as A) was synthesized for the extraction of cerium (IV) (Ce(IV)) from sulfate medium (H2SO4). The influence factors including extractant concentration, H2SO4 concentration and temperature on the Ce(IV) extraction were investi-gated and discussed. It is found that the extraction ability of Ce(IV), thorium (IV) (Th(IV)) and rare earths (REs(III)) (La, Gd, Yb) decreases in sulphate medium in the following order:Ce(IV)>Th(IV)>REs(III). The extraction process is an exothermic reaction and the thermodynamic parameters were calculated. The extracted complex of Ce(HSO4)2SO4·A in loaded organic solution was identified by the slope methods and further proved by FT-IR spectral analysis. Stripping studies indicate that Ce(IV) can be effectively stripped from the organic phase. The results of separation factors (β) and saturation loading capacity demonstrate that DEHAPO could be used to selectively extract Ce(IV) from sulphate medium with high separation efficiency and good extraction ability.

作者信息

序号	姓名	单位	发文数	被引次数	H指数	G指数
1	Mingxia Huang	中国科学院长春应用化学研究所	1	0	0.0	0.0
2	Yongmei Fu	中国科学院长春应用化学研究所	1	0	0.0	0.0
3	Youcai Lu	中国科学院长春应用化学研究所	1	0	0.0	0.0
4	Wuping Liao	中国科学院长春应用化学研究所	1	0	0.0	0.0
5	Zhongjun Li	中国科学院长春应用化学研究所	1	0	0.0	0.0