General trends in CO dissociation on transition metal surfaces

Z-P. Liu, Peijun Hu

Research output: Contribution to journalArticlepeer-review

184 Citations (Scopus)

Abstract

Dissociative adsorption is one of the most important reactions in catalysis. In this communication we propose a model aiming to generalize the important factors that affect dissociation reactions. Specifically, for a dissociation reaction, say AB -->A + B, the model connects the dissociation barrier with the association barrier, the chemisorption energies of A and B at the final state and the bonding energy of AB in the gas phase. To apply this model, we have calculated CO dissociation on Ru(0001), Rh(111), Pd(111) (4d transition metals), Os(0001), Ir(111), and Pt(111) (5d transition metals) using density function theory (DFT). All the barriers are determined. We find that the DFT results can be rationalized within the model. The model can also be used to explain many experimental observations. (C) 2001 American Institute of Physics.
Original languageEnglish
Pages (from-to)8244-8247
Number of pages4
JournalJournal of Chemical Physics
Volume114
Issue number19
Publication statusPublished - 15 May 2001

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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