STUDY OF ELECTROCHEMICAL BEHAVIOR OF VI-B GROUP METAL OXIDES IN TUNGSTATE MELT

Authors

  • Victor MALYSHEV International European University, 42 V Academician Glushkov Avenue, 03187, Kyiv, Ukraine https://orcid.org/0000-0002-2768-8760
  • Angelina GAB International European University, 42 V Academician Glushkov Avenue, 03187, Kyiv, Ukraine https://orcid.org/0000-0003-3162-7159
  • Ana-Maria POPESCU Romanian Academy, "Ilie Murgulescu" Institute of Physical Chemistry, Laboratory of Electrochemistry and Corrosion, 202 Splaiul Independentei, 060021, Bucharest, Romania, *popescuamj@yahoo.com. https://orcid.org/0000-0001-9019-706X
  • Virgil CONSTANTIN Romanian Academy, "Ilie Murgulescu" Institute of Physical Chemistry, Laboratory of Electrochemistry and Corrosion, 202 Splaiul Independentei, 060021, Bucharest, Romania, *virgilconstantin@yahoo.com. https://orcid.org/0000-0002-5076-9489

DOI:

https://doi.org/10.24193/subbchem.2025.4.03

Keywords:

VI-B group metals, thermodynamic assessment, electrochemical behavior, multielectron processes

Abstract

Thermodynamic assessment of the probability of interaction of metal oxides of group VI-B with tungstate melts, the results of the study of the acid-base properties of tungstate melt by potentiometric method. Analysis of the presented experimental data on the study of the electrochemical behavior of chromium, molybdenum and tungsten under equilibrium and non-equilibrium conditions allows us to conclude that it is possible to implement multi-electron reversible equilibria and electroreduction processes involving oxide forms of chromium, molybdenum and tungsten (VI) in tungstate melts. The mechanism and final product of electroreduction of oxide forms of metal (VI) depend on the acid-base properties of the medium. By setting the latter, it is possible to control the electrode process.

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STUDIA UBB CHEMIA, Volume 70 (LXX), No. 4, December 2025

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Published

2025-12-16

How to Cite

MALYSHEV, V., GAB, A., POPESCU, A.-M., & CONSTANTIN, V. (2025). STUDY OF ELECTROCHEMICAL BEHAVIOR OF VI-B GROUP METAL OXIDES IN TUNGSTATE MELT. Studia Universitatis Babeș-Bolyai Chemia, 70(4), 41–55. https://doi.org/10.24193/subbchem.2025.4.03

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Volume 70, No. 4, 2025

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