Author: X. Machuron-MandardPublisher:
ISBN:
Category :
Languages : en
Pages : 192
Book Description
Study of the Kinetics and the Mechanism of the Dissolution Reaction of Plutonium Dioxide by the Cr(II) Ion in Acid Solution
Author: X. Machuron-MandardIonic Equilibria and Reaction Kinetics of Plutonium in Hydrochloric Acid Solutions
Author: M. KashaPublisher:
ISBN:
Category : Hydrochloric acid
Languages : en
Pages : 44
Book Description
A Kinetic Study of Plutonium Dioxide Dissolution in Hydrochloric Acid Using Iron (II) as an Electron Transfer Catalyst
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Effective dissolution of plutonium dioxide has traditionally been accomplished by contact with strong nitric acid containing a small amount of fluoride at temperatures of [approximately] 100 C. In spite of these aggressive conditions, PuO[sub 2] dissolution is sometimes incomplete requiring additional contact with the solvent. This work focused on an alternative to conventional dissolution in nitric acid where an electron transfer catalyst, Fe(II), was used in hydrochloric acid. Cyclic voltammetry was employed as an in-situ analytical technique for monitoring the dissolution reaction rate. The plutonium oxide selected for this study was decomposed plutonium oxalate with> 95% of the material having a particle diameter (
A Kinetic Study of Plutonium Dioxide Dissolution in Hydrochloric Acid Using Iron (II) as an Electron Transfer Catalyst
Author: Keith William FifePublisher:
ISBN:
Category : Metallic oxides
Languages : en
Pages : 410
Book Description
Plutonium Dioxide Dissolution in Nitric/hydrofluoric Acid Mixtures
Author: Reactions Between Plutonium Ions in Perchloric Acid Solution
Author: M. KashaMethods for the Accountability of Plutonium Dioxide
Author: R. G. GutmacherPublisher:
ISBN:
Category : Plutonium oxides
Languages : en
Pages : 204
Book Description
The Kinetics of Dissolution of Beta-uranium Trioxide in Acid and Carbonate Solutions. Part 1 - Acid Solutions
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 12
Book Description
The kinetics of dissolution of beta-uranium trioxide in acid solutions have been studied as functions of stirring rate, hydrogen ion concentration, various cations and anions in the acid solutions and temperature. The salient features are that the dissolution rates were: (i) Independent of stirring rate. (ii) Dependent on 0.5-0.6 order of the hydrogen ion concentration. (iii) Inhibited by the presence of cations in solution. The rate decreased in the order Mg2+>Li+>Na+>NH4+>K+>Cs+. (iv) Increased by sulphate ions but unaffected by chloride, nitrate and perchlorate ions. (v) Arrhenius functions of temperature, with an activation energy of about 12 kcal per mol. The observed kinetic data has been rationalised in terms of a Charge Transfer mechanism, namely, the transfer of uranyl cations and protonated oxide anions across the electrochemical potential barrier at the solid-solution phase boundary is the rate-determining step during the dissolution reaction.
Energy Research Abstracts
Author: Method for Dissolving Plutonium Dioxide
Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
A method for dissolving plutonium dioxide comprises adding silver ions to a nitric acid-hydrofluoric acid solution to significantly speed up dissolution of difficultly soluble plutonium dioxide.