Complexation of Plutonium (IV) with Sulfate at Variable Temperatures
Journal Article
·
· Journal of Radioanalytical and Nuclear Chemistry, 274(1):79-86
The complexation of plutonium(IV) with sulfate at variable temperatures from 25o C to 55o C has been investigated by solvent extraction method. A NaBrO3 as holding oxidant was used to maintain plutonium in the Pu(IV) oxidation state throughout the experiments. The distribution ratio of Pu(IV) between the organic and aqueous phases was found to decrease as the concentrations of sulfate were increased. Stability constants of the 1:1 and 1:2 Pu(IV)-HSO4- complexes, dominant in the aqueous phase under the experimental conditions, were calculated from the effect of [HSO4-] on the distribution ratio. The enthalpy and entropy of complexation were calculated from the stability constants at different temperatures by using the Van’t Hoff equation.
- Research Organization:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (US)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 921576
- Report Number(s):
- PNNL-SA-50625; DF0961000
- Journal Information:
- Journal of Radioanalytical and Nuclear Chemistry, 274(1):79-86, Journal Name: Journal of Radioanalytical and Nuclear Chemistry, 274(1):79-86 Journal Issue: 1 Vol. 274; ISSN JRNCDM; ISSN 0236-5731
- Country of Publication:
- United States
- Language:
- English
Similar Records
Complexation of Plutonium (IV) with Fluoride at Variable Temperatures
Complexation of Plutonium (IV) With Sulfate At Variable Temperatures
Stability Constants of Np(V) Complexes with Phosphate at Variable Temperatures
Journal Article
·
Mon Feb 01 23:00:00 EST 2010
· Radiochimica Acta, 98(2):65-69
·
OSTI ID:1012303
Complexation of Plutonium (IV) With Sulfate At Variable Temperatures
Journal Article
·
Thu Oct 05 00:00:00 EDT 2006
·
OSTI ID:899324
Stability Constants of Np(V) Complexes with Phosphate at Variable Temperatures
Conference
·
Thu May 04 00:00:00 EDT 2006
·
OSTI ID:947952