Separation of actinides from lanthanides

Patent · Tue Sep 19 04:00:00 EDT 1989

OSTI ID:7268381

Smith, B F; Jarvinen, G D; Ryan, R R

This patent describes an organic extracting solution and an extraction method useful for separating elements of the actinide series of the periodic table from elements of the lanthanide series, where both are in trivalent form. The extracting solution consists of a primary ligand and a secondary ligand, preferably in an organic solvent. The primary ligand is a substituted monothio-1,3-dicarbonyl, which include a substituted 4-acyl-2-pyrazolin-5-thione, such as 4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione (BMPPT). The secondary ligand is a substituted phosphine oxide, such as trioctylphosphine oxide (TOPO).

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4867951
• Application Number: PPN: US 7176131A
• OSTI ID: 7268381
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105* -- Separation Procedures
ACTINIDES
CHEMICAL REACTION KINETICS
ELEMENTS
EXTRACTION
KINETICS
LIGANDS
METALS
OXYGEN COMPOUNDS
PHOSPHINE OXIDES
PHOSPHINES
PHOSPHORUS COMPOUNDS
RARE EARTHS
REACTION KINETICS
SEPARATION PROCESSES
SOLVENT EXTRACTION