Extraction of Am(III) and Eu(III) from nitrate media with Cyanex®-301 and neutral “N” donor ligands: A thermodynamic study
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A. Bhattacharyya
Abstract
Studies on the effect of temperature on the liquid–liquid extraction behaviour of a trivalent actinide ion, Am3+ and a trivalent lanthanide ion, Eu3+ using a “S”-donor soft ligand, bis (2,4,4-trimethylpentyl) dithiophosphinic acid (Cyanex®-301) were carried out. The temperature effect on the enhancement in extraction as well as the selectivity which occurred in the presence of neutral soft donor auxiliary ligands with “N” donor atoms viz. , bipyridyl ( bipy ) and 1,10-phenanthroline ( phen ) was also investigated. Thermodynamic parameters like the changes in the extraction enthalpy (ΔH°), entropy (ΔS°) and free energies (ΔG°) for both the binary as well as ternary extraction systems were obtained. These thermodynamic parameters could explain the nature of the species extracted with both Am(III) and Eu(III).
© by Oldenbourg Wissenschaftsverlag, München, Germany
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- Indication for a volatile element 114
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- Radiosynthesis and evaluation of [61Cu]-9,10-phenanthrenequinone thiosemicarbazone in fibrosarcoma-bearing animals for PET imaging
- Use of synthetic multi-element standards (SMELS) in the quality control and method validation of k0-neutron activation analysis
