Reversed Hysteresis during CO Oxidation over Pd75Ag25(100)
نویسندگان
چکیده
منابع مشابه
Oxidation of greenhouse gases, CH4 and CO, over LaMnxNi1-xO3±δ mixed oxide
The performance of LaMnxNi1-xO3±δ perovskite mixed oxides (x = 0, 0.1, 0.3, 0.5, 0.7, 0.9, 1) which were prepared by different methods, the Pechini and sol-gel methods in the oxidation of greenhouse gases, CH4 and CO, has been investigated. All samples were characterized using Fourier transform infrared spectroscopy, X-ray diffraction, scanning electr...
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In an attempt to bridge the material and pressure gaps - two major challenges for an atomic scale understanding of heterogeneous catalysis - we employed high-energy surface X-ray diffraction as a tool to study the Pd(553) surface in situ under changing reaction conditions during CO oxidation. The diffraction patterns recorded under CO rich reaction conditions are characteristic for the metallic...
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Introduction Catalytic oxidations with O2 are one of the most important and widely studied reaction classes in heterogeneous catalysis. Metal oxides are of particular interest as catalysts because of the potential to replace expensive precious metals such as Pt and Pd. Despite the promising catalytic oxidation activities metal oxides have shown, practical applications are limited by surface poi...
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Model catalysts of Au clusters supported on TiO2 thin films were prepared under ultra-high vacuum (UHV) conditions with average metal cluster sizes that varied from ∼2.5 to ∼6.0 nm. The reactivities of these Au/TiO2 catalysts were measured for CO oxidation at a total pressure of 40 Torr in a reactor contiguous to the surface analysis chamber. Catalyst structure and composition were monitored wi...
متن کاملComplete CO oxidation over Cu2O nanoparticles supported on silica gel.
We find that nearly monodisperse copper oxide nanoparticles prepared via the thermal decomposition of a Cu(I) precursor exhibit exceptional activity toward CO oxidation in CO/O2/N2 mixtures. Greater than 99.5% conversion of CO to CO2 could be achieved at temperatures less than 250 degrees C for over 12 h. In addition, the phase diagram and pathway for CO oxidation on Cu2O (100) is computed by a...
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ژورنال
عنوان ژورنال: ACS Catalysis
سال: 2016
ISSN: 2155-5435,2155-5435
DOI: 10.1021/acscatal.6b00658