Plutonium (iv) complexes of mixed pyridine n-oxide and phosphinoxide f-element extractants.

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Analytical and bulk scale separation and processing of aqueous acidic solution s containing f-element ions are regularly accomplished using liquid-liquid extraction (LLE) methods that employ a neutral organic donor ligand dissolved in an organic phase . 1-5 Several monofunctional ligands have been used as LLE reagents, but all display one or more deficiencies1 'S due to the chemical similarity of the tri valent lanthanides (Ln) to th e trivalent actindes (An) . Since the trivalent 4f and 5f ions have identical charges, chemical separation agents for these two groups need to differentiate among these har d cations based on their ... continued below

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[8] p.

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Matonic, John H.; Enriquez, Alejandro E.; Scott, Brian L.; Paine, Robert T. & Neu, Mary P. January 1, 2003.

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Description

Analytical and bulk scale separation and processing of aqueous acidic solution s containing f-element ions are regularly accomplished using liquid-liquid extraction (LLE) methods that employ a neutral organic donor ligand dissolved in an organic phase . 1-5 Several monofunctional ligands have been used as LLE reagents, but all display one or more deficiencies1 'S due to the chemical similarity of the tri valent lanthanides (Ln) to th e trivalent actindes (An) . Since the trivalent 4f and 5f ions have identical charges, chemical separation agents for these two groups need to differentiate among these har d cations based on their size or chemical bonding preferences . This task is not easy since, as a consequence of the lanthanide and actinide contractions, the Ln and An fission products which need to be separated have similar ionic radii . In order to develop new ligands for the separation process, we must have a fundamental understanding of how these separation agents interact with both Ln and An ions on a molecular level.

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[8] p.

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  • Submitted to: Plutonium Futures Conference. Marriott Hotel, Albuquerque, NM, July 6-10, 2003

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  • Report No.: LA-UR-03-0748
  • Grant Number: none
  • Office of Scientific & Technical Information Report Number: 976545
  • Archival Resource Key: ark:/67531/metadc935237

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  • January 1, 2003

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  • Nov. 13, 2016, 7:26 p.m.

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  • Dec. 12, 2016, 6:53 p.m.

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Matonic, John H.; Enriquez, Alejandro E.; Scott, Brian L.; Paine, Robert T. & Neu, Mary P. Plutonium (iv) complexes of mixed pyridine n-oxide and phosphinoxide f-element extractants., article, January 1, 2003; United States. (digital.library.unt.edu/ark:/67531/metadc935237/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.