Electrochemical properties of uranium in lactones: Kinetics and electrodeposition
- 42 Downloads
The electrochemical reductions of hexavalent and tetravalent uranium are reported in γ-butyrolactone, γ-valerolactone, γ-octanoiclactone and in the mixed solvent γ-butyrolactone/tetrahydrofuran. The transient techniques foresee either the formation of uranium dioxide or uranium metal according to a two-step reduction but the presence of these cathodic products is difficult to ascertain in controlled potential electrolysis. While mixing a lactone with tetrahydrofuran, the reversibility of the electrode reactions increases. The conducting salt noticeably determines the current yield of uranium deposition. As additional kinetic phenomena are made clear, we found that sampled polarography is the best method to gain a full understanding of the electrode mechanisms.
KeywordsUranium Lactone Tetrahydrofuran Electrochemical Reduction Electrode Reaction
Unable to display preview. Download preview PDF.
- 2.L. MARTINOT, F. GUBBELS, C. MICHAUX, C. NEMEEGER Radiochim. Acta, 57 (1992) 119.Google Scholar
- 3.L. MARTINOT, D. BARÉ, C. MICHAUX, J. Radioanal. Nucl. Chem., 170 (1993) 389.Google Scholar
- 4.L. LOPES, L. MARTINOT, C. MICHAUX, J. Radioanal. Nucl. Chem., 187 (1994) 99.Google Scholar
- 5.S. TOBISHIMA, T. OKADA, J., Applied Electrochem., 15 (1983) 317.Google Scholar
- 7.A. BARD, L. FAULKNER, Electrochemical Methods, Wiley, New York, 1980.Google Scholar
- 9.L. MARTINOT, J. Radioanal. Nucl. Chem., 106 (1986) 135.Google Scholar
- 10.D. PELYEAN, I. SHAIN, Anal. Chem., 38 (1966) 30.Google Scholar