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

Jörg H. Albering; Tomáš Grygar

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

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	117-120
Number of pages	4
Journal	Journal of Solid State Electrochemistry
Volume	3
Issue number	2
Publication status	Published - 1999

Keywords

Electrochemistry
Manganates(v)
Mn oxides

ASJC Scopus subject areas

Electrochemistry

Cite this

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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.",

keywords = "Electrochemistry, Manganates(v), Mn oxides",

author = "Albering, {J{\"o}rg H.} and Tom{\'a}{\v s} Grygar",

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journal = "Journal of Solid State Electrochemistry",

issn = "1432-8488",

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AU - Albering, Jörg H.

AU - Grygar, Tomáš

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N2 - 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.

AB - 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.

KW - Electrochemistry

KW - Manganates(v)

KW - Mn oxides

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M3 - Article

AN - SCOPUS:0033475796

SN - 1432-8488

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JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

IS - 2

ER -

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

Abstract

Keywords

ASJC Scopus subject areas

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