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Cu/CeO2 as efficient low-temperature CO oxidation catalysts: effects of morphological structure and Cu content

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Abstract

Cu loaded on different morphologies of CeO2 were synthesized and tested by SEM and CO catalytic oxidation experiment, the results indicated that with the same Cu load, nanorod-like Cu/CeO2 performed the best catalytic activity than 3D flower-like Cu/CeO2 and gear-like Cu/CeO2. Then nanorod-like Cu/CeO2 were chose to explore the best Cu load on CeO2 nanorods for CO oxidation. Cu/CeO2 nanorods were characterized by TEM, XRD, XPS as well as physical and chemical adsorption. The results indicate that 0.15Cu/CeO2 nanorods have the best catalytic activity because of more reducing copper species (Cu+), adsorbed oxygen (Oads) and Ce3+ species on the catalysts surface, which can achieve 99% CO conversion at 100 °C. The effect of CO2 and water vapor on catalytic activity was also examined.

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Acknowledgements

This work was supported by the National Key R&D Program of China (2019XKQYMS70), and Program for Changjiang Scholars and Innovative Research Team in University (IRT17R103).

Funding

Funding was provided by the National Key R&D Program of China (2019XKQYMS70) and Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Province (CN) (IRT17R103).

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Authors and Affiliations

  1. Jiangsu Key Laboratory of Fire Safety in Urban Underground Space, China University of Mining and Technology, Xuzhou, 221116, Jiangsu, People’s Republic of China

    Chunlei Wu, Zengzeng Guo, Xiaoyu Chen & Hong Liu

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  1. Chunlei Wu
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  2. Zengzeng Guo
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  3. Xiaoyu Chen
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  4. Hong Liu
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Correspondence to Xiaoyu Chen.

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Wu, C., Guo, Z., Chen, X. et al. Cu/CeO2 as efficient low-temperature CO oxidation catalysts: effects of morphological structure and Cu content. Reac Kinet Mech Cat 131, 691–706 (2020). https://doi.org/10.1007/s11144-020-01870-0

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