Basis for the structure sensitivity of the CO+NO reaction on palladium
- Department of Chemistry, Texas A&M University, College Station, Texas 77843-3255 (United States)
The structure sensitive reaction, CO+NO, has been studied on two crystal planes of palladium. The Pd(111) surface was found to be approximately five times more active than Pd(100) for NO reduction by CO. This structure sensitivity is attributed primarily to the stabilization of molecularly adsorbed NO (NO{sub a}) relative to N{sub a} on Pd(111) vs Pd(100). It has also been found that the Pd(100) surface is more effective at dissociating NO{sub a} than Pd(111). As a result, Pd(100) yields a higher ratio of N{sub 2}/N{sub 2}O compared to Pd(111). Pd(100), however, also stabilizes atomic nitrogen on the surface, resulting in the poisoning of subsequent NO adsorption/dissociation and thus inhibiting the overall CO+NO reaction. {copyright} {ital 1996 American Vacuum Society}
- OSTI ID:
- 284667
- Report Number(s):
- CONF-9510385--
- Journal Information:
- Journal of Vacuum Science and Technology, A, Journal Name: Journal of Vacuum Science and Technology, A Journal Issue: 3 Vol. 14; ISSN 0734-2101; ISSN JVTAD6
- Country of Publication:
- United States
- Language:
- English
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