Studies of the Behavior of Trivalent Uranium in Aqueous Solution. I : Its Reduction and Its Stability in Various Acid Solutions
スポンサーリンク
概要
- 論文の詳細を見る
Various methods for the reduction of hexavalent uranium to the trivalent state were examined. It was found that the liquid-zinc-amalgam method is simple and rapid, and gives a high yield with a good reproducibility in hydrochloric, sulfuric, and perchloric acid solutions. The percentage of reduction is over 99% in a 0.5 N hydrochloric acid solution. Next, the stability of trivalent uranium in these media was investigated ; it was observed that the trivalent uranium ion is fairly stable in any hydrochloric, sulfuric and perchloric acid solutions at a low concentration of the acids in the absence of atmospheric oxygen, but that it becomes unstable as the acid concentration increases. Both the percentage of reduction by the liquid-zinc-amalgam method and the stability of trivalent uranium are highest in a hydrochloric acid solution, next highest in a perchloric acid solution, and lowest in a sulfuric acid solution.
- 東北大学の論文
著者
関連論文
- Irradiation of Natural Uranium by the Neutrons of the Japan Material Testing Reactor
- Studies of the Synthetic Inorganic Ion Exchanger. V. : The Separation of Zirconium-95 and Niobium-95 by Means of a Stannic Phosphate Cation Exchanger
- Synthetic Stannic Phosphate Cation Exchanger
- Effect of Superposition of Alternating Electric Current for Isotope Separation by Ion Exchange Electromigration Method
- Production of Curium by the Neutron Irradiation of Americium-241
- A Systematic Calculation of Nuclear Yields at the Production of Transuranium Elements by Multi-step Neutron Irradiation in a Reactor
- A Determination of the Equilibrium Constant of HTO-H_2S Reaction
- Studies of the Behavior of Trivalent Uranium in an Aqueous Solution. III : Extraction from a Hydrochloric Acid Solution by Bis(n-butyl) Orthophosphoric Acid and by Bis-(2-ethylhexyl) Orthophosphoric Acid
- Studies of the Behavior of Trivalent Uranium in Aqueous Solution. I : Its Reduction and Its Stability in Various Acid Solutions
- Studies of the Behavior of Trivalent Uranium in an Aqueous Solution. II : Absorption Spectra and Ion Exchange Behavior in Various Acid Solutions
- Investigation on the complex formation of some lanthanoids(III) and actinoids(III) with chloride and bromide.
- The solvent extraction of Np(III) by means of bis(2-ethylhexyl)hydrogenphosphate in an octane solution and the absorption spectrum of the organic phase.
- Sublimation behavior of tris(2,2,6,6-tetramethyl-3,5-heptanedionato)lanthanoid(III).
- Sublimation behavior of actinoid chelates of 2,2,6,6-tetramethyl-3,5-heptanedione.
- The Chemistry of Protactinium. XI. A Study of the Solvent Extraction of Protactinium(IV) Reduced with Europium(II) from a Perchloric Acid Solution, Using Thenoyltrifluoroacetone as the Extractant