Ferric Oxide Modified Silica to Support Gold Catalyst for Low-Temperature CO Oxidation

Xiaodong DAI, Yuan YAO, Huanrong LIU

Abstract


Low-temperature oxidation of CO to CO2 plays a key role in broad application prospects. In order to achieve the low-temperature oxidation of CO, the gold catalyst was prepared using Fe2O3-modified SiO2 as support. The results showed that CO conversion was enhanced over the modified catalyst. At – 10 °C, CO conversion of 95 % could be achieved. The catalysts were characterized by XRD and TEM, and the results showed that the Fe2O3 was dispersed in the form of amorphous state. Attributed to the Au-Fe2O3 interaction, the modified catalyst exhibited excellent performance for the oxidation of CO.

DOI: http://dx.doi.org/10.5755/j01.ms.24.3.19450


Keywords


gold catalyst; CO oxidation; SiO2; Fe2O3; interaction

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Print ISSN: 1392–1320
Online ISSN: 2029–7289