Publication
Surface Science
Paper

Microscopic model for the poisoning and promotion of adsorption rates by electronegative and electropositive atoms

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Abstract

A theoretical framework for comparing binding energies and activation energies for adsorption on surfaces based on the effective medium theory is presented. It is applied to a microscopic description of the mechanisms underlying the promotion and poisoning of the molecular adsorption process on metal surfaces by co-adsorbed species. Based on self-consistent calculations of the electronic structure of adsorbed electropositive and electronegative atoms, estimates of the range and strength of this so-called electronic factor in heterogeneous catalysis are made which are in good agreement with recent experimental studies. © 1984.

Date

01 Feb 1984

Publication

Surface Science

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