Identification of the "Active Sites" of a Surface-Catalyzed Reaction
- 20 September 1996
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 273 (5282), 1688-1690
- https://doi.org/10.1126/science.273.5282.1688
Abstract
The dissociation of nitric oxide on a ruthenium(0001) surface was studied by scanning tunneling microscopy. The distribution of nitrogen atoms after the dissociation allowed the identification of the “active sites” for this reaction, which are formed by the low-coordinated, top metal atoms of atomic steps. It is proposed that their activity is caused by local changes in the electronic structure. The structure of the steps determines whether they remain active or become deactivated by oxygen atoms. The results demonstrate the complex manner in which the structure of a catalytic surface determines the reactivity ofthe catalyst and confirm the active sites concept.Keywords
This publication has 16 references indexed in Scilit:
- Diffusion and Atomic Hopping of N Atoms on Ru(0001) Studied by Scanning Tunneling MicroscopyPhysical Review Letters, 1996
- Electronic factors determining the reactivity of metal surfacesSurface Science, 1995
- Quantitative determination of the activity of defect sites on a single-crystalline surface: C–H bond activation of carbon-13 labeled ethane on Ir(111)The Journal of Chemical Physics, 1994
- A chemical and theoretical way to look at bonding on surfacesReviews of Modern Physics, 1988
- Alkali-metal-affected adsorption of molecules on metal surfacesSurface Science Reports, 1988
- Electronic structure and local atomic configurations of flat and stepped (111) surfaces of Ni and CuPhysical Review B, 1981
- A multimethod study of the adsorption of NO on Ru(001): I. XPS, UPS and XAES measurementsSurface Science, 1979
- Adsorption and Dissociation of Nitric Oxide on the Ru(001) SurfacePhysical Review Letters, 1978
- The catalytic chemistry of nitric oxide: II. Reduction of nitric oxide over noble metal catalystsJournal of Catalysis, 1974
- A theory of the catalytic surfaceProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1925