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Solvent extraction of alkaline earth metals with alkylphosphorus acids
Alternative TitleChin. J. Chem. Eng.
Xu, X; Zhu, T
2002-02-01
Source PublicationCHINESE JOURNAL OF CHEMICAL ENGINEERING
ISSN1004-9541
Volume10Issue:1Pages:25-32
AbstractSolvent extraction equilibria of four main alkaline earth metals (magnesium, calcium, strontium and barium) with di(2-ethylhexyl) phosphoric acid (DEHPA), 2-ethylhexyl phosphonic acid mono-(2-ethylhexyl) ester, di(2,4,4-tri-methylpentyl) phosphinic acid and IR spectra of the extracts have been studied. The selectivity order is dependent on the e/r value and hydration energy of the metal ions. The minor shift of the P-->O in IR absorption of the alkaline earth metal extracts indicates that the interaction between the metal ions and P-->O is much weaker for alkaline earth metals than for transitional metals. The distribution of the four alkaline earth elements between aqueous solutions and solutions of DEHPA and neutral organophosphorus compounds, tri-n-butyl phosphate (TBP) or tri-octyl phosphine oxide (TOPO) in kerosene have been determined at varying ratio of TBP or TOPO to DEHPA and the positive synergism is observed. The synergic effect is explained by using IR spectra of the loaded organic phase.; Solvent extraction equilibria of four main alkaline earth metals (magnesium, calcium, strontium and barium) with di(2-ethylhexyl) phosphoric acid (DEHPA), 2-ethylhexyl phosphonic acid mono-(2-ethylhexyl) ester, di(2,4,4-tri-methylpentyl) phosphinic acid and IR spectra of the extracts have been studied. The selectivity order is dependent on the e/r value and hydration energy of the metal ions. The minor shift of the P-->O in IR absorption of the alkaline earth metal extracts indicates that the interaction between the metal ions and P-->O is much weaker for alkaline earth metals than for transitional metals.
KeywordSolvent Extraction Alkaline Earth Metals Di(2-ethylhexyl) Phosphoric Acid (Dehpa)
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
URL查看原文
Indexed BySCI
Language英语
WOS KeywordTRIOCTYLPHOSPHINE OXIDE ; CARBON-TETRACHLORIDE ; SEPARATION ; LITHIUM
WOS Research AreaEngineering
WOS SubjectEngineering, Chemical
WOS IDWOS:000174602500003
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Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/5660
Collection研究所(批量导入)
AffiliationChinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Xu, X,Zhu, T. Solvent extraction of alkaline earth metals with alkylphosphorus acids[J]. CHINESE JOURNAL OF CHEMICAL ENGINEERING,2002,10(1):25-32.
APA Xu, X,&Zhu, T.(2002).Solvent extraction of alkaline earth metals with alkylphosphorus acids.CHINESE JOURNAL OF CHEMICAL ENGINEERING,10(1),25-32.
MLA Xu, X,et al."Solvent extraction of alkaline earth metals with alkylphosphorus acids".CHINESE JOURNAL OF CHEMICAL ENGINEERING 10.1(2002):25-32.
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