Kinetics of Pu(VI) reduction with carbohydrazide in nitric acid

Kinetics of Pu(VI) reduction with carbohydrazide in nitric acid

The kinetics of the Pu(VI) reduction with carbohydrazide in nitric acid solutions was studied by spectrophotometry. The reaction rate increases with increasing carbohydrazide concentration and temperature and decreases with increasing HNO 3 concentration. The reaction order with respect to Pu, carbo...

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Veröffentlicht in:Radiochemistry (New York, N.Y.) N.Y.), 2017-07, Vol.59 (4), p.331-336
Hauptverfasser: Zavalina, O. A., Dvoeglazov, K. N., Pavlyukevich, E. Yu
Format: Artikel
Sprache:eng
Schlagworte:
Activation energy
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Nitric acid
Nuclear Chemistry
Reaction kinetics
Reduction
Spectrophotometry
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Zusammenfassung:The kinetics of the Pu(VI) reduction with carbohydrazide in nitric acid solutions was studied by spectrophotometry. The reaction rate increases with increasing carbohydrazide concentration and temperature and decreases with increasing HNO 3 concentration. The reaction order with respect to Pu, carbohydrazide, and HNO 3 is 1, 2.3, and–3, respectively. The activation energy of the reaction is 111 kJ mol –1 . The final reduced Pu form is Pu(III), with Pu(V) being an intermediate.
ISSN:1066-3622
1608-3288
DOI:10.1134/S1066362217040014