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Modeling the Processes of the Dissolution of Chromium(III) and Copper Oxides in an Acidic Environment

Moscow University Chemistry Bulletin volume 75, pages 8–14 (2020)Cite this article

Abstract

Based on the experimental studies of the dissolution of Cr2O3 and CuO in an acidic environment, as well as investigation of the effect of acids, pH, and concentration of anions on the rate of dissolution of the oxides, the nature of the limiting stage is determined which consists in the formation of surface compounds (depending on the acidity of the environment) of the \({\text{MeOH}}_{s}^{{x + }}\) and \({\text{MeHSO}}_{{4s}}^{{x + }}\) types and their subsequent transition into the solution of the electrolyte. The comparative analysis of the dissolution of the oxides of two d metals is performed.

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Funding

This work was supported by the Council on Competitiveness Enhancement of Leading Russian Universities among Global Research and Education Centers.

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Authors and Affiliations

  1. Sechenov University, 119991, Moscow, Russia

    O. N. Plakhotnaia, A. A. Zhukova, A. N. Kuzmenko, I. I. Krasnyuk Jr., S. R. Naryshkin & E. V. Mazyarkin

  2. Omsk State Pedagogical University, 644099, Omsk, Russia

    I. V. Skvortsova

  3. Bauman State Technical University, 105005, Moscow, Russia

    E. A. Eliseeva

  4. Moscow State Pedagogical University, 119991, Moscow, Russia

    I. G. Gorichev

Authors
  1. O. N. Plakhotnaia
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  2. I. V. Skvortsova
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  3. A. A. Zhukova
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  4. E. A. Eliseeva
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  5. I. G. Gorichev
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  6. A. N. Kuzmenko
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  7. I. I. Krasnyuk Jr.
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  8. S. R. Naryshkin
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  9. E. V. Mazyarkin
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Correspondence to A. N. Kuzmenko.

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Humans or animals were not used as research objects in this work.

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Translated by E. Boltukhina

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Plakhotnaia, O.N., Skvortsova, I.V., Zhukova, A.A. et al. Modeling the Processes of the Dissolution of Chromium(III) and Copper Oxides in an Acidic Environment. Moscow Univ. Chem. Bull. 75, 8–14 (2020). https://doi.org/10.3103/S0027131420010101

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  • DOI: https://doi.org/10.3103/S0027131420010101

Keywords:

  • chromium(III) oxide
  • copper oxide
  • heterogeneous kinetics
  • acid–base equilibria