Modeling of Diffusion Process in the Isotopic Oxygen Exchange Experiments of CexZr(1-x)O2 Catalysts

  • Arvaidas GALDIKAS Physics Department, Kaunas University of Technology, 50 Studentu st. LT-51368 Kaunas LITHUANIA
  • Nicolas BION University of Poitiers
  • Daniel DUPREZ University of Poitiers
  • Vitalis VIRBICKAS Kaunas University of Technology
  • Darius MAŽELIS Kaunas University of Technology
Keywords: Kinetics, Catalysis, Modeling, Diffusion, Isotopic Oxygen Exchange

Abstract

The oxygen mobility processes during the temperature programmed oxygen isotopic exchange is considered by proposed kinetic model. Model includes simple and complex heteroexchange reactions and bulk diffusion processes. The model is applied to fit experimental curves of CexZr(1-x)O2 catalysts with different composition in order to calculate reaction rates and diffusion coefficients, and activation energies of those processes.

DOI: http://dx.doi.org/10.5755/j01.ms.19.1.1630

Published
2013-03-19
Section
CERAMICS AND GLASSES