On tunneling-dissociation at surfaces

The dissociation rates when molecules with strong internal bonds are incident at surfaces span a huge range. For some systems, typical rates are very small and depend significantly on conditions of incidence and on the surface temperature. In such cases, rates can be significantly influenced, and ev...

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Bibliographic Details
Published inSurface science Vol. 287; pp. 56 - 63
Main Authors Harris, J., Luntz, A.C.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Lausanne Elsevier B.V 10.05.1993
Amsterdam Elsevier Science
New York, NY
Subjects
Chemistry
Exact sciences and technology
General and physical chemistry
Solid-gas interface
Surface physical chemistry
Surface reaction
Tunnel effect
Metallic adsorbent
Theoretical study
Chemical dissociation
Surface temperature
Review
Reaction rate
Incidence
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Summary:The dissociation rates when molecules with strong internal bonds are incident at surfaces span a huge range. For some systems, typical rates are very small and depend significantly on conditions of incidence and on the surface temperature. In such cases, rates can be significantly influenced, and even dominated by quantum mechanical tunneling through activation barriers. We give a brief review of the main features to be expected when the rate of dissociation is tunneling dominated and discuss recent data for specific adsorption systems in light of these features.
ISSN:0039-6028
1879-2758
DOI:10.1016/0039-6028(93)90742-3