The Kinetics of Dissolution of Beta-uranium Trioxide in Acid and Carbonate Solutions. Part 1 - Acid Solutions PDF Download
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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.
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.
Author: Markus H.A. Piro Publisher: Woodhead Publishing ISBN: 008102651X Category : Business & Economics Languages : en Pages : 672
Book Description
Advances in Nuclear Fuel Chemistry presents a high-level description of nuclear fuel chemistry based on the most recent research and advances. Dr. Markus H.A. Piro and his team of global, expert contributors cover all aspects of both the conventional uranium-based nuclear fuel cycle and non-conventional fuel cycles, including mining, refining, fabrication, and long-term storage, as well as emerging nuclear technologies, such as accident tolerant fuels and molten salt materials. Aimed at graduate students, researchers, academics and practicing engineers and regulators, this book will provide the reader with a single reference from which to learn the fundamentals of classical thermodynamics and radiochemistry. - Consolidates the latest research on nuclear fuel chemistry into one comprehensive reference, covering all aspects of traditional and non-traditional nuclear fuel cycles - Includes contributions from world-renowned experts from many countries representing government, industry and academia - Covers a variety of fuel designs, including conventional uranium dioxide, mixed oxides, research reactor fuels, and molten salt fuels - Written by experts with hands-on experience in the development of such designs
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Author: W. E. Schortmann
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Author: James Frederick Jackson
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Author: B. J. Fontana
Author: Markus H.A. Piro
Author: ![A Study of the Kinetics of the Dissolution and Hydration Reactions of [beta]-uranium Trioxide PDF](https://books.google.com/books/content/images/frontcover/ziTkNwAACAAJ?fife=w80-h100)
Author: Peter Denis Scott