Effects of adsorbate islanding on reaction kinetics and thermal desorption spectra: a monte carlo-quasichemical model

Marvin Silverberg*, Avinoam Ben-Shaul

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

The role of adsorbate lateral interactions in surface reaction kinetics is studied for bimolecular reactions A + B → AB. One reactant (A) tends to aggregate into islands, B is mobile and AB is a rapidly desorbing product. A model combining Monte Carlo dynamics for the slow processes (A-aggregation and AB-formation) and an appropriately modified quasichemical approximation for the fast ones (B-redistribution) is used to calculate reaction rates. Reaction desorption spectra and activation energies are calculated for different initial conditions and adsorbate lateral interactions.

Original languageEnglish
Pages (from-to)491-496
Number of pages6
JournalChemical Physics Letters
Volume134
Issue number5
DOIs
StatePublished - 13 Mar 1987

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