ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

The Effect of Electrolyte Composition on the Electrodeposition of Molybdenum from KF—B₂0₃—K₂Mo0₄ Melts 2. Voltammetry

M. Makyta, T. A. Utigard, P. Zatko, A. Silný, and M. Chrenková

Institute of Inorganic Chemistry, Slovak Academy of Sciences, SK-842 36 Bratislava

Abstract: Voltammetric experiments have been carried out to determine the effect of the electrolyte composition on the mechanism of electrodeposition of molybdenum from molten KF-B₂0₃-K₂MoO₄ salts. It was confirmed that during the dissolution of potassium molybdate in molten KF-B₂0₃ electrolyte both electrochemically active and electrochemically inactive molybdenum-containing species are created. Moreover, at least two electrochemically active molybdenum compounds are present with the first one dominating for n(Mo)/n(B) ratios up to 0.4 and the second one dominating for ratios above 0.66. The electrodeposition of molybdenum metal from the electrochemically active species is a reversible six-electron electrochemical reaction. Results in the above system obtained by the chronopotentiometric method are described in Part I of this series.

Full paper in Portable Document Format: 514a208.pdf

Chemical Papers 51 (4) 208–212 (1997)