On the CO-Oxidation over Oxygenated Ruthenium
نویسندگان
چکیده
منابع مشابه
Reply to comment on ‘‘CO oxidation on ruthenium: The nature of the active catalytic surface’’ by H. Over,
The premise of our Letter [1] was to state emphatically that under the conditions of the early studies of Peden and Goodman (PG) [2] RuO2 cannot be formed as the main active phase on Ru(0001) as proved by recent SXRD studies [3], and that a monolayer oxygen-covered Ru(0001) surface is the active phase for CO oxidation in the early PG studies. This monolayer oxygen-covered surface has recently b...
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CO oxidation over polycrystalline ruthenium dioxide was monitored in an in-situ XRD setup. The evolution of the bulk state of the catalyst was followed by in-situ XRD during reaction, while the surface morphology and chemical state before and after reaction were investigated by HRSEM and EDX. The commercial RuO2 powder was calcined prior reaction to ensure the formation of completely oxidized R...
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A series of ceria nanocatalysts have been prepared to study the structure dependency of the CO oxidation reaction. The ceria samples with well-defined nanostructures (nanocubes/Ce-NC and nanorods/Ce-NR) have been prepared using the hydrothermal method. Mesoporous ceria (Ce-MES) and ceria synthesized with solution combustion technique (Ce-SCS) have also been prepared for comparison. The lowest C...
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Platinum alloyed with transition metals at various compositions exhibits an enhanced catalytic activity for reactions involving oxygen activation, but little is known about the significance of oxophilicity that may play a role in maneuvering surface oxygenated species through the alloyed transition metal sites. Fundamental questions for sustainable high catalytic activity involve whether the ox...
متن کاملCO oxidation on ruthenium: The nature of the active catalytic surface
The oxidation of CO, i.e. CO + =2O2 ! CO2, over metal surfaces is one of the most studied catalytic reactions. The details of the reaction mechanism under ultrahigh vacuum (UHV) conditions have been well understood for some time [1]. Under reducing or mildly oxidizing conditions for Pt, Pd, and Rh, metals used in automotive catalytic converters, the reaction proceeds via the Langmuir–Hinshelwoo...
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ژورنال
عنوان ژورنال: Zeitschrift für Physikalische Chemie
سال: 2009
ISSN: 2196-7156,0942-9352
DOI: 10.1524/zpch.2009.6032