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- W4238879907 abstract "The electrochemistry of uranium in acidic AlCl3+N-(n-butyl)pyridinium chloride was investigated. In 2:1 melts, the reduction of U(IV) to U(III) on glassy carbon electrodes is irreversible (kinetic parameters for this electrode reaction are reported). Measurements of the formal standard potential of the U(IV)/U(III) redox couple as a function of the melt acidity indicate that U(III) exists as U3+ while U(IV) is present as chlorocomplexes, UClx(4−x)+ with 3≥x≥1 (in 2:1 melts, UCl3+ is the major U(IV) species. The oxidation of U(IV) to U(V) on glassy carbon electrodes is irreversible and strongly dependent on the melt acidity. Spectroscopic measurements indicate that U(V) in those melts exists as a chlorocomplex with the metal atom in an almost regular octahedral field. In 2:1 melts, a second anodic wave for the oxidation of U(V) to U(VI) is observed at potentials more positive than the thermodynamic potential limit of the solvent; this wave merges with the chlorine evolution reaction if the acidity of the melt is decreased." @default.
- W4238879907 created "2022-05-12" @default.
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- W4238879907 date "1982-12-23" @default.
- W4238879907 modified "2023-09-30" @default.
- W4238879907 title "Electrochemistry of uranium(IV) in acidic AlCl3 + N-(n-butyle)pyridinium chloride room-temperature molten salts" @default.
- W4238879907 doi "https://doi.org/10.1016/0368-1874(82)80010-5" @default.
- W4238879907 hasPublicationYear "1982" @default.
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