Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Dynamics for oxidation of Fe3O4, Fe2CoO4 and Fe2NiO4
KTH, School of Chemical Science and Engineering (CHE), Chemistry, Nuclear Chemistry.ORCID iD: 0000-0003-0663-0751
2005 (English)In: Journal of Nuclear Materials, ISSN 0022-3115, E-ISSN 1873-4820, Vol. 345, no 03-feb, 219-224 p.Article in journal (Refereed) Published
Abstract [en]

The kinetics for oxidation of CRUD model compounds (Fe3O4, Fe2CoO4, and Fe2NiO4) by IrCl62- and MnO4- has been studied using aqueous suspensions of metal oxide powder. The second order rate constants at room temperature were determined to 3.6(+/- 0.3) x 10(-6), 1.2(+/- 0.2) x 10(-5) and 3.3(+/- 0.5) x 10(-6) min(-1) m for Fe3O4, Fe2CoO4 and Fe2NiO4 reacting with IrCl6-2 and to 1.5(+/- 0.2) x 10(-6), 1. 2(+/- 0.1) x 10(-6) and 6(+/- 1) x 10(-7) min(-1) m for the reactions with MnO4- The reactivity of the metal oxides is in the order Fe2CoO4 > Fe3O4 > Fe2NiO4 for both oxidants. Unlike previous studies on oxidation of UO2, there is no linear relation between the logarithm of the rate constant. In k, and the one-electron reduction potential of the oxidants for the metal oxides studied here. This discrepancy is explained in terms of differences in the reorganization energy of the metal oxides giving rise to different curvature in accordance with the Marcus theory for electron transfer.

Place, publisher, year, edition, pages
2005. Vol. 345, no 03-feb, 219-224 p.
Keyword [en]
low-temperature oxidation, electron-transfer, mechanism, magnetites, oxides, charge, nickel, rates, uo2
Identifiers
URN: urn:nbn:se:kth:diva-15056DOI: 10.1016/j.jnucmat.2005.06.001ISI: 000232041400012Scopus ID: 2-s2.0-29144438078OAI: oai:DiVA.org:kth-15056DiVA: diva2:333097
Note
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Authority records BETA

Jonsson, Mats.

Search in DiVA

By author/editor
Jonsson, Mats.
By organisation
Nuclear Chemistry
In the same journal
Journal of Nuclear Materials

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 55 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf