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THE KINETICS OF COBALT(II) EXTRACTION WITH EHEHPA IN HEPTANE FROM ACETATE SYSTEM USING AN IMPROVED LEWIS CELL TECHNIQUE
Alternative TitleSolvent Extr. Ion Exch.
CHEN, CQ; ZHU, T
1994
Source PublicationSOLVENT EXTRACTION AND ION EXCHANGE
ISSN0736-6299
Volume12Issue:5Pages:1013-1032
AbstractThe cobalt(LI) extraction kinetics and mechanism with EHEHPA (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) were investigated by an improved constant interfacial area stirred cell. The effects of the buffer species, stirring rate, temperature, specific interfacial area and surfactants on the extraction rate showed that the extraction regime was dependent on the extraction conditions and the most probable reaction zone was at the liquid-liquid interface. This extraction process was reaction controlled at lower concentration of the reactants, while it was mixed chemical reaction-diffusion or diffusion controled only for higher concentration of the reactants. An interfacial extraction reaction model with diffusion was derived. The kinetics of the extraction process was simulated with this model.; The cobalt(LI) extraction kinetics and mechanism with EHEHPA (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester) were investigated by an improved constant interfacial area stirred cell. The effects of the buffer species, stirring rate, temperature, specific interfacial area and surfactants on the extraction rate showed that the extraction regime was dependent on the extraction conditions and the most probable reaction zone was at the liquid-liquid interface. This extraction process was reaction controlled at lower concentration of the reactants, while it was mixed chemical reaction-diffusion or diffusion controled only for higher concentration of the reactants. An interfacial extraction reaction model with diffusion was derived. The kinetics of the extraction process was simulated with this model.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
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Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Multidisciplinary
WOS IDWOS:A1994PL64100007
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/7994
Collection研究所(批量导入)
AffiliationACAD SINICA, INST CHEM MET, BEIJING 100080, PEOPLES R CHINA
Recommended Citation
GB/T 7714
CHEN, CQ,ZHU, T. THE KINETICS OF COBALT(II) EXTRACTION WITH EHEHPA IN HEPTANE FROM ACETATE SYSTEM USING AN IMPROVED LEWIS CELL TECHNIQUE[J]. SOLVENT EXTRACTION AND ION EXCHANGE,1994,12(5):1013-1032.
APA CHEN, CQ,&ZHU, T.(1994).THE KINETICS OF COBALT(II) EXTRACTION WITH EHEHPA IN HEPTANE FROM ACETATE SYSTEM USING AN IMPROVED LEWIS CELL TECHNIQUE.SOLVENT EXTRACTION AND ION EXCHANGE,12(5),1013-1032.
MLA CHEN, CQ,et al."THE KINETICS OF COBALT(II) EXTRACTION WITH EHEHPA IN HEPTANE FROM ACETATE SYSTEM USING AN IMPROVED LEWIS CELL TECHNIQUE".SOLVENT EXTRACTION AND ION EXCHANGE 12.5(1994):1013-1032.
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