On highly active partially oxidized platinum in carbon monoxide oxidation over supported platinum catalysts

• Published in: Journal of catalysis Vol. 263; no. 2; pp. 228 - 238
• Main Authors: Alayon, E.M.C., Singh, J., Nachtegaal, M., Harfouche, M., van Bokhoven, J.A.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Inc 25.04.2009; Elsevier; Elsevier BV
• Subjects: Active phase; Analytical chemistry; Carbon monoxide; Carbon monoxide oxidation; Catalysis; Catalysts; Chemistry; Exact sciences and technology; General and physical chemistry; In situ XAS; Oxidation; Platinum; Supported platinum catalysts; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Carbon monoxide oxidation; Active phase; Supported platinum catalysts; In situ XAS; Binary compound; Bond length; In situ; Ignition; High temperature; Silica; Supported catalyst; Particle; Dynamics; Platinum; Defect; Oxidation; Carbon monoxide; Structure; Low temperature; Platinum oxide; Oxygen; Extinction; Transition element compounds; Transition metal; Heterogeneous catalysis; Silicon oxides; Gas phase; Titanium oxide; Catalyst activity; Alumina; X ray absorption

In situ X-ray absorption spectroscopy identified the role of oxidized platinum species in generating a high-activity state in the oxidation of carbon monoxide over Pt/Al 2O 3, Pt/TiO 2 and Pt/SiO 2. Two activity regimes were identified: low-activity at high carbon monoxide concentration and low temp...