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- W4248221094 abstract "Electrochemical oxidation of U(IV) has been studied in molten LiF-BeF2-ZrF4 (65.6-29.4-5.0 mole %) at 500° by means of voltammetry (scan rate, v, 0.01-100 V/sec), chronopotentiometry, and chronoamperometry at unsheathed pyrolytic graphite and Pt−10% Rh electrodes. The following results point to the disproportionation of the electrochemically-produced U(V): (a) no voltammetric currents owing to the re-reduction of the product at v≪I V/sec, the peak currents (ip) for the oxidation of U(IV) and re-reduction of the product being approximately equal at v≫I V/sec; (b) peak currents for the reduction of U(IV) to U(III) and the oxidation of U(IV) are the same at large scan rates; (c) the observed increase in ip/v1/2 vs. v at v<I V/sec; (d) the observed variation of i0τ1/2 with i02/3 is in agreement with theoretical predictions of Fischer and Dracka8. At Pt−10% Rh electrodes, evidence for the adsorption of U(IV) has been obtained. The reproducibility of voltammograms and chronopotentiograms for the oxidation process is poor, presumably owing to attack of the working electrode by U(VI) produced in the disproportionation." @default.
- W4248221094 created "2022-05-12" @default.
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- W4248221094 date "1968-07-01" @default.
- W4248221094 modified "2023-09-26" @default.
- W4248221094 title "Disproportionation of electrochemically-generated uranium(V) in molten LiF-BeF2-ZrF4 at 500°" @default.
- W4248221094 doi "https://doi.org/10.1016/0368-1874(68)87014-5" @default.
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