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Title of article :
Water formation on Pt(1 1 1) surfaces at high temperatures studied by kinetic Monte Carlo simulations
Author/Authors :
A. Lamikiz، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2005
Pages :
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Abstract :
By introducing finite diffusion of absorbed hydrogen atoms, adsorption, desorption and reaction patterns in H2O formation on the Pt(1 1 1) surface were simulated with the kinetic Monte Carlo (KMC) method. The results of the finite diffusion model proposed, show clearly the variation of OH desorption, which has not been observed in both the infinite diffusion model and the mean field theory. The simulation results indicate that diffusion of hydrogen atoms on the surface is essential for the reaction pattern, as the total coverage is low, and OH desorption occurs above 900 K at the value of the partial pressure ratio between hydrogen and oxygen molecules, a ¼ PH2=PO, about 0.08
Keywords :
Water formation , Kinetic Monte Carlo , desorption , diffusion , adsorption
Journal title :
Applied Surface Science
Journal title :
Applied Surface Science
Serial Year :
Link To Document :