Kinetic phase transitions in a surface reaction model with local interactions
- 1 January 1991
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 94 (1) , 777-780
- https://doi.org/10.1063/1.460346
Abstract
The steady-state properties of the CO oxidation on a catalyst surface are investigated by Monte Carlo simulations. We extend the irreversible model of Ziff, Gulari, and Barshad [Phys. Rev. Lett. 56, 2553 (1986)] by means of adsorption probabilities depending on the instantaneous local coverages. We almost follow Kaukonen and Nieminen [J. Chem. Phys. 91, 4380 (1989)] simulation procedure. It results in a qualitative change in the original phase diagram with, especially, the vanishing of the second order phase transition of the adsorbate. We also show how the addition of the diffusion of CO in our simulations shifts the transition points obtained so far.Keywords
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