Oxidation states and complex ions of uranium in fused chlorides and nitrates☆
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Thermodynamic measurements and assessments for LiCl-NaCl-KCl-UCl<inf>3</inf> systems
2023, Journal of Chemical ThermodynamicsElectrochemical and spectroscopic analysis of thermochemical conversion of UO<inf>2</inf> to UCl<inf>3</inf> using AlCl<inf>3</inf> and Al in LiCl–KCl eutectic
2022, Progress in Nuclear EnergyCitation Excerpt :The conversion efficiency of UO2 was highest (89.1 wt%) for UO2+ La2O3 mixture compared to that for other mixed oxides. The preparation of UCl3 was studied using the reactions of Al and U metal with UCl4 in LiCl–KCl (Gruen and Mcbeth, 1959). Authors prepared UCl4 by refluxing UO3 with hexachloropropylene.
Uranium chemical species in LiCl-KCl eutectic under different conditions for the dissolution of U<inf>3</inf>O<inf>8</inf>
2020, Journal of Nuclear MaterialsRecovery of uranium and plutonium from pyrochemical salt matrix using supercritical fluid extraction
2019, Journal of Supercritical FluidsCitation Excerpt :SFE of uranium using conventional ligands resulted in poor extraction yield provides an additional evidence for the possibility of presence of uranium as UO2Cl42−/ UCl63- species in the salt matrix. In addition, hexachloro coordinated ions, UCl62- and UCl63- ions are present in melts containing the complexes are retained in quenched melt samples [59–61]. The extraction scheme is represented in Fig. 11 and involves the following steps
Comparison of the spectroscopic characteristics of uranium status when U(III) in LiCl-KCl eutectic melt is leached out with water and ionic liquid
2018, Journal of LuminescenceCitation Excerpt :The absorption spectrum of the UCl3 in LiCl-KCl eutectic melt mixed in HMICl ionic liquid was obtained at room temperature after a baseline correction with LiCl-KCl eutectic melt mixed in HMICl ionic liquid, not including UCl3. As shown in Fig. 1, the spectrum of U(III) in LiCl-KCl eutectic melt mixed in HMICl ionic liquid presents absorption within the region of 450–600 nm, which is the same as the shape and position of U(III) in LiCl-KCl eutectic at 450 °C in the sample preparation and that reported in [9]. The two absorption spectra are very comparable with each other because Cl ions are the only possible complexing anionic species in the mixing system.
Co-electrodeposition of U and Mo from a LiCl-KCl melt
2018, Journal of Nuclear Materials
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Based on work performed under the auspices of the U.S. Atomic Energy Commission.