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Titel:

CO Oxidation on a Single Pd Atom Supported on Magnesia

Autor(en):
Abbet, S.; Heiz, U.; Hakkinen, H.; Landman, U.
Abstract:
The oxidn. of CO on single Pd atoms anchored to MgO(100) surface oxygen vacancies is studied with temp.-programmed-reaction mass spectrometry and IR spectroscopy. In one-heating-cycle expts., CO2, formed from O2 and CO preadsorbed at 90 K, is detected at 260 and 500 K. Ab-initio simulations suggest two reaction routes, with Pd(CO)2O 2 and PdCO3CO found as precursors for the low and high temp. channels, resp. Both reactions result in annealing of the vacancy and induce migration and coalescence o...     »
Stichworte:
Ab initio methods Oxidation catalysts (CO oxidn. on a single Pd atom supported on magnesia) carbon monoxide oxidn single palladium atom supported magnesia
Kongresstitel:
CAN 135:51599 67-2 Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms Institut de Physique de la Matiere Condensee, Universite de Lausanne, Lausanne, Switz. Journal 0031-9007 1309-48-4 (Magnesia); 7440-05-3 (Palladium) Role: CAT (Catalyst use), PRP (Properties), USES (Uses) (CO oxidn. on a single Pd atom supported on magnesia); 630-08-0 (Carbon monoxide) Role: RCT (Reactant), RACT (Reactant or reagent) (CO oxidn. on a single Pd atom supported on magnesia)
Zeitschriftentitel:
Phys. Rev. Lett.
Jahr:
2001
Band / Volume:
86
Heft / Issue:
26, Pt. 1
Seitenangaben Beitrag:
5950-5953
Volltext / DOI:
doi:10.1103/PhysRevLett.86.5950
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