Separation of actinides from lanthanides

Patent · Sat Dec 31 23:00:00 EST 1988

OSTI ID:867112

Smith, Barbara F ^[1]; Jarvinen, Gordon D ^[1]; Ryan, Robert R ^[1]

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1. Los Alamos, NM

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 includes 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).

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM
• DOE Contract Number: W-7405-ENG-36
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4867951
• OSTI ID: 867112
• Country of Publication: United States
• Language: English

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3-dicarbonyl
4-acyl-2-pyrazolin-5-thione
4-benzoyl-2
4-dihydro-5-methyl-2-phenyl-3h-pyrazol-3-thione
actinide
actinide series
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lanthanide
lanthanide series
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oxide
periodic
periodic table
phosphine
phosphine oxide
preferably
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secondary
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table
topo
trioctylphosphine
trioctylphosphine oxide
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