A note regarding the rate-determining step of reduction of solid manganates(V)

Jörg H. Albering*, Tomáš Grygar

*Corresponding author for this work

    Research output: Contribution to journalArticle

    Abstract

    Potential pulse chonoamperometry was applied to immobilized microparticles of manganates(V) and MnO2 in order to compare the nature of the rate determining step in their reduction. Manganates(V) were found to be reduced by an irreversible one-electron surface reaction, whereas MnO2 reduction is controlled by a reversible reaction coupled to solid-state diffusion. The key importance of the coordination preferences of reacting metal ions on the surface layer of the solid particles is also discussed with respect to known mechanisms of electrochemical dissolution of Fe and Cr oxides.

    Original languageEnglish
    Pages (from-to)117-120
    Number of pages4
    JournalJournal of solid state electrochemistry
    Volume3
    Issue number2
    Publication statusPublished - 1999

    Keywords

    • Electrochemistry
    • Manganates(v)
    • Mn oxides

    ASJC Scopus subject areas

    • Electrochemistry

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