Oxygen on iron oxide: Kinetic evidence of an atomic species

B. L. Yang, Harold H Kung

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

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
Pages (from-to)329-336
Number of pages8
JournalJournal of Catalysis
Volume75
Issue number2
DOIs
Publication statusPublished - 1982

Fingerprint

Iron oxides
iron oxides
Oxygen
Kinetics
Desorption
kinetics
oxygen
Iron
desorption
Ions
iron
ions
Activation energy
activation energy
Adsorption
Temperature
Molecules
adsorption
room temperature
ferric oxide

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Oxygen on iron oxide : Kinetic evidence of an atomic species. / Yang, B. L.; Kung, Harold H.

In: Journal of Catalysis, Vol. 75, No. 2, 1982, p. 329-336.

Research output: Contribution to journalArticle

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