中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Distribution Behaviors of Light Rare Earths by Di-(2-ethylhexyl) 2-Ethylhexyl Phosphonate in Kerosene under the Action of a Self-Salting-Out Effect

文献类型:期刊论文

作者Zhao, Junmei1; Huo, Fang1; Pan, Feng1; Li, Deqian2; Liu, Huizhou1
刊名INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
出版日期2014-01-29
卷号53期号:4页码:1598-1605
ISSN号0888-5885
关键词solvent-extraction nitric-acid nitrate medium cyanex 272 cerium(iv) lanthanides separation dehehp recovery fluorine(i)
其他题名Ind. Eng. Chem. Res.
中文摘要Neutral organophosphates have been used for the extraction and separation of rare earths, usually with the addition of an extra salting-out reagent to achieve the necessary high ionic strength. In this work, we propose a novel approach to extraction from rare earth solutions with fairly high concentrations without an extra salting-out reagent. The distribution behaviors of La, Pr, and Nd in a nitrate solution extracted with di-(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP) in kerosene under the action of a self-salting-out effect were investigated, including the extraction mechanism, extracted species, extraction isotherms, and effects of acidity and temperature. The obtained results show that the extraction species probably is RE(NO3)(3)center dot 1.5DEHEHP according to the slope analysis method and the saturation extraction method. Considering the other coexisting light rare earths, such as Ce and Sm, the separation factors were also examined through a comparison of the two commercial extractants P350 and TBP. The extraction selectivity for DEHEHP under the action of the self-salting-out effect is much higher than that of TBP but just slightly below that of P350. Finally, it can be concluded that the current system using DEHEHP as an extractant under the action of the self-salting-out effect shows good prospects for the purification of La from other light rare earths.
英文摘要Neutral organophosphates have been used for the extraction and separation of rare earths, usually with the addition of an extra salting-out reagent to achieve the necessary high ionic strength. In this work, we propose a novel approach to extraction from rare earth solutions with fairly high concentrations without an extra salting-out reagent. The distribution behaviors of La, Pr, and Nd in a nitrate solution extracted with di-(2-ethylhexyl) 2-ethylhexyl phosphonate (DEHEHP) in kerosene under the action of a self-salting-out effect were investigated, including the extraction mechanism, extracted species, extraction isotherms, and effects of acidity and temperature. The obtained results show that the extraction species probably is RE(NO3)(3)center dot 1.5DEHEHP according to the slope analysis method and the saturation extraction method. Considering the other coexisting light rare earths, such as Ce and Sm, the separation factors were also examined through a comparison of the two commercial extractants P350 and TBP. The extraction selectivity for DEHEHP under the action of the self-salting-out effect is much higher than that of TBP but just slightly below that of P350. Finally, it can be concluded that the current system using DEHEHP as an extractant under the action of the self-salting-out effect shows good prospects for the purification of La from other light rare earths.
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Chemical
研究领域[WOS]Engineering
关键词[WOS]SOLVENT-EXTRACTION ; NITRIC-ACID ; NITRATE MEDIUM ; CYANEX 272 ; CERIUM(IV) ; LANTHANIDES ; SEPARATION ; DEHEHP ; RECOVERY ; FLUORINE(I)
收录类别SCI
原文出处://WOS:000330598800033
语种英语
WOS记录号WOS:000330598800033
公开日期2014-05-06
版本出版稿
源URL[http://ir.ipe.ac.cn/handle/122111/8076]  
专题过程工程研究所_研究所(批量导入)
作者单位1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Changchun 130022, Peoples R China
推荐引用方式
GB/T 7714
Zhao, Junmei,Huo, Fang,Pan, Feng,et al. Distribution Behaviors of Light Rare Earths by Di-(2-ethylhexyl) 2-Ethylhexyl Phosphonate in Kerosene under the Action of a Self-Salting-Out Effect[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2014,53(4):1598-1605.
APA Zhao, Junmei,Huo, Fang,Pan, Feng,Li, Deqian,&Liu, Huizhou.(2014).Distribution Behaviors of Light Rare Earths by Di-(2-ethylhexyl) 2-Ethylhexyl Phosphonate in Kerosene under the Action of a Self-Salting-Out Effect.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,53(4),1598-1605.
MLA Zhao, Junmei,et al."Distribution Behaviors of Light Rare Earths by Di-(2-ethylhexyl) 2-Ethylhexyl Phosphonate in Kerosene under the Action of a Self-Salting-Out Effect".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 53.4(2014):1598-1605.

入库方式: OAI收割

来源:过程工程研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。