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Kinetics of the propene oxidation over a Pt/alumina catalyst

Authors
Journal
Catalysis Communications
1566-7367
Publisher
Elsevier
Publication Date
Volume
36
Identifiers
DOI: 10.1016/j.catcom.2013.03.001
Keywords
  • Kinetic Study
  • Propene Oxidation
  • Platinum
  • Langmuir–Hinshelwood Model
  • Molecular Propene Adsorption

Abstract

Abstract This article reports the results obtained during the kinetic study of propene total oxidation on a platinum alumina catalyst in excess of oxygen. Reaction partial orders of propene and oxygen exhibited values of about −0.5 and +1, respectively. Propene presented a great inhibitory effect whereas an increase of oxygen concentration promoted the reaction. Based on TPD results, a Langmuir–Hinshelwood LH model considering propene to be adsorbed without dissociation was raised. A good agreement between experimental data and predicted results was observed. The value of the adsorption constants obtained confirmed that oxygen was more weakly adsorbed on the catalyst than propene.

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