Calculated equilibria between adjacent valence states of plutonium in simple aqueous solutions

Technical Report · Sun Feb 01 00:00:00 EST 1981

DOI:https://doi.org/10.2172/6698600· OSTI ID:6698600

Sweeton, F. H.

Equilibrium data have been taken from the literature for the oxidation of Pu/sup 3 +/ to Pu/sup 4 +/, Pu/sup 4 +/ to PuO/sub 2//sup +/ and PuO/sub 2//sup +/ to PuO/sub 2//sup 2 +/, and for the hydrolysis of these four plutonium species in dilute solutions. These data have been used to calculate the oxidation-reduction potentials (expressed as E/sub h/) at which the concentrations of the two species (including the hydrolyzed forms) in each pair are equal. These calculations cover the pH range of 0 to 13. The results indicate that there are conditions under which each species can be predominant. The solubility of PuO/sub 2/ under environmental conditions is also discussed.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6698600
• Report Number(s): ORNL/TM-7358; TRN: 81-003944
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
PLUTONIUM
VALENCE
AQUEOUS SOLUTIONS
EQUILIBRIUM
HYDROLYSIS
OXIDATION
SOLUBILITY
ACTINIDES
CHEMICAL REACTIONS
DECOMPOSITION
DISPERSIONS
ELEMENTS
LYSIS
METALS
MIXTURES
SOLUTIONS
SOLVOLYSIS
TRANSURANIUM ELEMENTS
400702* - Radiochemistry & Nuclear Chemistry- Properties of Radioactive Materials