A Fluorous Biphasic Solvent Extraction System for Lanthanides with a Fluorophilic β-Diketone Type Extractant

The properties of a fluorous solvent extraction system for trivalent lanthanide metal ions are reported. A fluorinated extractant, 4,4,5,5,6,6,7,7,8,8,9,9,9-tridecafluoro-1-(2-thienyl)-1,3-nonanedione, and HFE-7200 (C4F9OC2H5) as the extraction solvent were chosen. With this fluorous extractant/solv...

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Bibliographic Details
Published in:Analytical Sciences 2015/09/10, Vol.31(9), pp.923-928
Main Authors: NAKAMURA, Etsuko, HIRUTA, Yuki, WATANABE, Takafumi, IWASAWA, Naoko, CITTERIO, Daniel, SUZUKI, Koji
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Fluorination
fluorous solvent
lanthanide
Lanthanides
Mathematical analysis
mutual separation
Neodymium
Rare earth metals
Separation
Solvent extraction
Solvents
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Summary:The properties of a fluorous solvent extraction system for trivalent lanthanide metal ions are reported. A fluorinated extractant, 4,4,5,5,6,6,7,7,8,8,9,9,9-tridecafluoro-1-(2-thienyl)-1,3-nonanedione, and HFE-7200 (C4F9OC2H5) as the extraction solvent were chosen. With this fluorous extractant/solvent combination, higher extraction ratios and separation factors compared to a conventional organic solvent system (thenoyltrifluoroacetone in CHCl3) were achieved for 5 heavy lanthanide ions (Lu, Yb, Tm, Er and Ho). On the other hand, light lanthanide ions (Nd, Pr, Ce and La) are hardly extracted, therefore enabling the mutual separation of light lanthanides from middle or heavy lanthanide ions.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.31.923