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Russian Journal of Electrochemistry

, Volume 54, Issue 11, pp 1006–1011 | Cite as

Electroreduction of Mo(VI) Compounds in Ammonium–Acetate Solutions

  • V. V. KuznetsovEmail author
  • M. A. Volkov
  • D. A. Zhirukhin
  • E. A. Filatova
Article
  • 1 Downloads

Abstract

The kinetics of cathodic reactions in ammonium acetate solutions proposed for electrodeposition of metallic molybdenum was studied. The reduction of molybdenum compounds in the oxidation state +6 was found to occur stepwise according to the scheme Mo(VI) → Mo(V) → Mo(III). The waves observed on the polarograms are complicated by adsorption effects. The reduction of molybdenum to the metallic state is possible only at high negative potentials of the cathode; under the polarographic analysis conditions, this wave was not recorded. The deposit that formed on the surface of the solid cathode during cathodic polarization (i = 0.5 A cm–2) contains both molybdenum in the metallic state and molybdenum oxides. The ratio between the electrolysis products depends on the temperature of solution: a decrease in the temperature leads to an increase in the amount of metallic molybdenum.

Keywords

electrodeposition kinetics molybdenum 

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • V. V. Kuznetsov
    • 1
    Email author
  • M. A. Volkov
    • 1
  • D. A. Zhirukhin
    • 1
  • E. A. Filatova
    • 1
  1. 1.Mendeleev University of Chemical Technology of RussiaMoscowRussia

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