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Radiation chemical behavior of actinides in extraction systems. IV. Interaction of Pu(IV) with H/sub 3/PO/sub 4/ in the system 30% TBP + n-dodecane

Journal Article · · Sov. Radiochem. (Engl. Transl.); (United States)
OSTI ID:5844953
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Spectrophotometric, radiometric (..gamma..-spectrophotometric), and elemental analyses were used to determine the composition, solubility, and concentration stability constant K of complexes of Pu(IV) with H/sub 3/PO/sub 4/ in the system 30% TBP + n-dodecane containing 0.45 M HNO/sub 3/. For a Pu(IV) concentration of approx. 1 x 10/sup -2/ M and a molar concentration ratio of H/sub 3/PO/sub 4/ and Pu(IV) of less than or equal to 2.5 the sparingly soluble (1.8 x 10/sup -3/ M) complex Pu(HPO/sub 4/)/sub 2/ is formed. In the range of H/sub 3/PO/sub 4/ concentrations (C/sub L//sup 0/) from 5 x 10/sup -3/ to 3.0 x 10/sup -2/ M the value of K does not depend on C/sub L//sup 0/ and is (1.8 +/- 0.6) x 10/sup 5/ liter/sup 2//mole/sup 2/. The results are discussed and compared with the interaction of Pu(IV) with DBPA and MBPA in aqueous and organic solutions.

OSTI ID:
5844953
Journal Information:
Sov. Radiochem. (Engl. Transl.); (United States), Journal Name: Sov. Radiochem. (Engl. Transl.); (United States) Vol. 28:5; ISSN SVRDA
Country of Publication:
United States
Language:
English

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Related Subjects

050400 -- Nuclear Fuels-- Feed Processing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ACTINIDE COMPLEXES
ACTINIDE COMPOUNDS
ALKANES
BUTYL PHOSPHATES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMISTRY
COMPARATIVE EVALUATIONS
COMPLEXES
COMPLEXOMETRY
DBP
DECOMPOSITION
DODECANE
ELECTROMAGNETIC RADIATION
ESTERS
GAMMA RADIATION
GAMMA SPECTRA
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
IONIZING RADIATIONS
MBP
NITRIC ACID
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
ORGANIC SOLVENTS
PHOSPHORIC ACID
PHOSPHORIC ACID ESTERS
PLUTONIUM COMPLEXES
PLUTONIUM COMPOUNDS
QUANTITY RATIO
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
SOLUBILITY
SOLVENT PROPERTIES
SOLVENTS
SPECTRA
SPECTROPHOTOMETRY
STABILITY
TBP
TRANSURANIUM COMPLEXES
TRANSURANIUM COMPOUNDS
VALENCE
YIELDS