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Solvothermal synthesis in ethylene glycol and catalytic activity for CO oxidation of CuO/CeO2 catalysts

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Abstract

A series of supported CuO/CeO2 catalysts with various CuO loadings (5–25 wt%) were prepared using a solvothermal method with ethylene glycol as solvent. The effects of CuO loading on physicochemical properties and catalytic activity of the prepared CuO/CeO2 catalysts have been investigated by X-ray diffraction, Raman spectroscopy, BET surface area measurement, X-ray photoelectron spectroscopy, temperature-programmed reduction with H2, temperature-programmed desorption of CO techniques, and low-temperature CO oxidation reaction test. The results indicate that the catalyst with 10 wt% CuO loading has the highest catalytic activity, which can be attributed to the largest amounts of well-dispersed CuO species strongly interacting with support CeO2 and oxygen vacancies caused by the incorporation of Cu2+ into CeO2 lattice, and the highest concentration of and the most active lattice oxygen. The activity for CO oxidation of the supported CuO/CeO2 catalyst prepared by the present solvothermal method was significantly higher than that of the counterparts prepared by the commonly used impregnation and deposition–precipitation methods.

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Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (21273150) and the ‘‘ShuGuang’’ Project (10GG23) of Shanghai Municipal Education Commission and Shanghai Education Development Foundation.

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  1. Research Institute of Applied Catalysis, School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai, 201418, China

    Yu-Ling Zheng, Dong-Sen Mao, Shuai-Shuai Sun & Guang-Ying Fu

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Correspondence to Dong-Sen Mao.

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Zheng, YL., Mao, DS., Sun, SS. et al. Solvothermal synthesis in ethylene glycol and catalytic activity for CO oxidation of CuO/CeO2 catalysts. J Mater Sci 51, 917–925 (2016). https://doi.org/10.1007/s10853-015-9420-3

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