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- Title
Pd(111) versus Pd–Au(111) in carbon monoxide oxidation under elevated pressures.
- Authors
Piednoir, A.; Languille, M.; Piccolo, L.; Valcarcel, A.; Cadete Santos. Aires, F.; Bertolini, J.
- Abstract
The oxidation of CO on Pd(111) and Pd70Au30(111) has been studied under pressures upto 100 Torr. Gold is found to decrease the surface activity by inhibiting oxygen dissociation. For a sufficient conversion time depending on the CO coverage and the surface identity, a dramatic boost of activity occurs. This is ascribed to a switch from CO-induced inhibition of O2 adsorption to a regime determined by CO adsorption. The other kinetic features are explained by oxidation of palladium and adsorption-induced restructuring of the surfaces.
- Subjects
PALLADIUM; GOLD; CARBON monoxide; OXIDATION; SURFACE chemistry
- Publication
Catalysis Letters, 2007, Vol 114, Issue 1/2, p110
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-007-9047-3