Gold-Iron Oxide Catalyst for CO Oxidation: Effect of Support Structure
AbstractGold-iron oxide (Au/FeOx) is one of the highly active catalysts for CO oxidation, and is also a typical system for the study of the chemistry of gold catalysis. In this work, two different types of iron oxide supports, i.e., hydroxylated (Fe_OH) and dehydrated iron oxide (Fe_O), have been used for the deposition of gold via a deposition-precipitation (DP) method. The structure of iron oxide has been tuned by either selecting precipitated pH of 6.7–11.2 for Fe_OH or changing calcination temperature of from 200 to 600 °C for Fe_O. Then, 1 wt. % Au catalysts on these iron oxide supports were measured for low-temperature CO oxidation reaction. Both fresh and used samples have been characterized by multiple techniques including transmission electron microscopy (TEM) and high-resolution TEM (HRTEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), X-ray absorption near edge structure (XANES) and temperature-programmed reduction by hydrogen (H2-TPR). It has been demonstrated that the surface properties of the iron oxide support, as well as the metal-support interaction, plays crucial roles on the performance of Au/FeOx catalysts in CO oxidation. View Full-Text
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Cui, H.-Z.; Guo, Y.; Wang, X.; Jia, C.-J.; Si, R. Gold-Iron Oxide Catalyst for CO Oxidation: Effect of Support Structure. Catalysts 2016, 6, 37.
Cui H-Z, Guo Y, Wang X, Jia C-J, Si R. Gold-Iron Oxide Catalyst for CO Oxidation: Effect of Support Structure. Catalysts. 2016; 6(3):37.Chicago/Turabian Style
Cui, Hui-Zhen; Guo, Yu; Wang, Xu; Jia, Chun-Jiang; Si, Rui. 2016. "Gold-Iron Oxide Catalyst for CO Oxidation: Effect of Support Structure." Catalysts 6, no. 3: 37.
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