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Title: Enhanced activity of Au catalysts from extra-high surface area CeO<sub>2</sub> for CO oxidation
Authors: Jin, Ling-Yun
Guo, Cun-Xia
Wang, Yue-Juan
Lu, Ji-Qing
Luo, Meng-Fei
Keywords: Catalysts
Solid catalysts
CO oxidation
Solid solutions
Oxygen vacancies
Issue Date: Aug-2011
Publisher: NISCAIR-CSIR, India
Abstract: A series of Au/CeO<sub>2</sub> catalysts has been prepared with CeO<sub>2</sub> of varying surface areas and tested for low-temperature CO oxidation. With a higher surface area support, the Au/CeO<sub>2</sub> catalysts show a higher catalytic activity for CO oxidation (0.175 mol<sub>CO</sub> g<sub>Au</sub><sup>-1</sup> h<sup>-1</sup> at 0 °C). Higher oxygen vacancies provided by the formation of solid solution of Au<sub>x</sub>Ce<sub>1-x</sub>O<sub>2-</sub><sub>δ</sub> and higher CO chemisorption sites related to Au species are responsible for the enhanced activity.
Description: 1056-1060
ISSN: 0975-0975(Online); 0376-4710(Print)
Appears in Collections:IJC-A Vol.50A(08) [August 2011]

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