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Extraction of trivalent lanthanides and actinides by a synergistic mixture of thenoyltrifluoroacetone and a linear polymer

Journal Article · · Solvent Extr. Ion Exch.; (United States)
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Mixtures of a linear polyether, K-5, and thenoyltrifluoroacetone, HTTA, have been shown to exhibit synergistic character in the extraction of trivalent lanthanides and actinides. The effect of the addition of K-5 to the organic phase on the extractions of Ce(III), Eu(III), Tm(III), Am(III), Cm(III), Bk(III), and Cf(III) by HTTA in chloroform from 0.5M NaNO/sub 3/ at 25/sup 0/C has been measured. These results indicate the extraction is enhanced by the formation of an adduct containing one metal molecule, 3 TTA molecules, and one K-5 molecule in the organic phase. The organic phase stability constants for the formation of these synergistic species have been calculated for all the metals studied. The magnitude of these organic phase stability constants for K-5 are similar to other common neutral donors. The order of stability does not follow the normal trend based on charge-to-radius ratio, but follows a pattern based on size, with Am(III) being the most stable.

Research Organization:
Tennessee Technological Univ., Cookeville
DOE Contract Number:
AS05-79ER10489; W-7405-ENG-26
OSTI ID:
6200301
Journal Information:
Solvent Extr. Ion Exch.; (United States), Journal Name: Solvent Extr. Ion Exch.; (United States) Vol. 2:4-5; ISSN SEIED
Country of Publication:
United States
Language:
English

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Related Subjects

052001 -- Nuclear Fuels-- Waste Processing
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
AMERICIUM
BERKELIUM
CALIFORNIUM
CERIUM
CURIUM
DATA
ELEMENTS
ETHERS
EUROPIUM
EXPERIMENTAL DATA
EXTRACTION
HETEROCYCLIC COMPOUNDS
INFORMATION
KETONES
METALS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC SULFUR COMPOUNDS
RARE EARTHS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SYNERGISM
THULIUM
TRANSPLUTONIUM ELEMENTS
TRANSURANIUM ELEMENTS
TTA