Oxygen on iron oxide: Kinetic evidence of an atomic species

B. L. Yang, H. H. Kung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations


Oxygen adsorbed on α-Fe2O3 in three different forms over the temperature range from 450 °C to room temperature. The form that adsorbed and desorbed between 200 and 300 °C desorbed with a second-order kinetics which suggested its atomic nature. The activation energy of desorption was found to be 163 ± 8 kJ/mole, and the initial coverage at 240 °C was 1.4 × 1016 molecules/m2. It was postulated that the adsorption and desorption of this species involved pairs of surface iron ions containing coordinative unsaturation, while surface mobility of the species was provided by single surface iron ions.

Original languageEnglish (US)
Pages (from-to)329-336
Number of pages8
JournalJournal of Catalysis
Issue number2
StatePublished - Jun 1982

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry


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