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

作者：Nakamura Etsuko; Hiruta Yuki; Watanabe Takafumi; Iwasawa Naoko; Citterio Daniel^*; Suzumt Koji

来源：Analytical Sciences, 2015, 31(9): 923-928.

DOI：10.2116/analsci.31.923

• Solvent extraction
• fluorous solvent
• lanthanide
• mutual separation

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.

• 出版日期2015-9