Mechanisms of neptunium redox reactions in nitric acid solutions

2017 ◽  
Vol 4 (4) ◽  
pp. 581-594 ◽  
Author(s):  
Sayandev Chatterjee ◽  
Samuel A. Bryan ◽  
Amanda J. Casella ◽  
James M. Peterson ◽  
Tatiana G. Levitskaia
Keyword(s):  
Nitric Acid ◽  
Electronic Structures ◽  
Redox Reactions ◽  
Oxidation States ◽  
Acid Solutions ◽  
Nitric Acid Solutions

This work explores the mechanisms of inter-conversions among the various oxidation states of neptunium in aqueous HNO3, and the effect of HNO3 on their electronic structures.

Mechanisms of Plutonium Redox Reactions in Nitric Acid Solutions

2020 ◽  
Vol 59 (10) ◽  
pp. 6826-6838
Author(s):  
Sayandev Chatterjee ◽  
James M. Peterson ◽  
Amanda J. Casella ◽  
Tatiana G. Levitskaia ◽  
Samuel A. Bryan
Keyword(s):  
Nitric Acid ◽  
Redox Reactions ◽  
Acid Solutions ◽  
Nitric Acid Solutions

Actinide binding by Kläui ligands: REDOX speciation and sorption on an extraction chromatography resin

2008 ◽  
Vol 96 (12) ◽  
Author(s):  
Tatiana G. Levitskaia ◽  
Sergey I. Sinkov ◽  
Gregg J. Lumetta
Keyword(s):  
Extraction Chromatography ◽  
Redox Reactions ◽  
Oxidation States ◽  
Sorption Behavior ◽  
Acid Solutions ◽  
Methyl Derivative ◽  
Acid Base ◽  
High Affinity ◽  
Nitric Acid Solutions ◽  
Actinide Ions

AbstractThe sorption of Eu(III) and actinide ions in various oxidation states from nitric acid solutions by an extraction chromatography resin containing 1 wt. % of the Kläui ligand CpResin samples loaded with various actinide ions were examined spectrophotometrically. No Np(V) and Pu(III) species were identified on the resin; rather, reduction–oxidation (REDOX) reactions occurred during equilibration, resulting in their complete conversion to M(IV) species bound by the Kläui ligand. Similarly, the sorption behavior of Pu(VI) and Np(VI) was complicated by their reduction to M(IV) upon sorption. The observed REDOX processes were apparently driven by the extremely high affinity of the Kläui ligand for the tetravalent ions. The acid–base properties of the methyl derivative of the Kläui ligand were investigated in aqueous solution, and its p

scholarly journals Thermodynamic Study on Redox Reactions of Boiling Nitric Acid Solutions

2003 ◽  
Vol 52 (1) ◽  
pp. 44-52 ◽  
Author(s):  
Chiaki Kato ◽  
Kiyoshi Kiuchi ◽  
Katsuhisa Sugimoto
Keyword(s):  
Nitric Acid ◽  
Redox Reactions ◽  
Thermodynamic Study ◽  
Acid Solutions ◽  
Nitric Acid Solutions
Sign in / Sign up

Export Citation Format

Share Document