Potentials of Np(VI)/Np(V) and Pu(VI)/Pu(V) Couples in Mixed Solvents

The formal potentials of Np(VI)/Np(V) and Pu(VI)/Pu(V) couples in acetonitrile–water and ethanol–water solutions containing 0.01 M HClO 4 at 25°С were measured by the potentiometric method. In acetonitrile–water solutions, the potentials of both couples decrease with decreasing water content from 55...

Full description

Saved in:
Bibliographic Details
Published in:Radiochemistry (New York, N.Y.) N.Y.), 2022-12, Vol.64 (6), p.694-697
Main Authors: Fedoseev, A. M., Shilov, V. P.
Format: Article
Language:English
Subjects:
Acetonitrile
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Ethanol
Moisture content
Nuclear Chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The formal potentials of Np(VI)/Np(V) and Pu(VI)/Pu(V) couples in acetonitrile–water and ethanol–water solutions containing 0.01 M HClO 4 at 25°С were measured by the potentiometric method. In acetonitrile–water solutions, the potentials of both couples decrease with decreasing water content from 55.55 to 30 M. This is caused by the hydrolysis of NpO 2 2+ and PuO 2 2+ ions. With a further decrease in the proportion of water, the potentials of the couples do not change. This indicates that the hydration numbers of An(VI) and An(V) are the same and equal to 5. Similar results were obtained in ethanol–water solutions.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362222060042