Journal
CATALYSIS SCIENCE & TECHNOLOGY
Volume 10, Issue 24, Pages 8383-8395Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cy01729a
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Funding
- National Natural Science Foundation of China [21273150]
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CuO-CeO2 catalysts with different CuO contents prepared via a direct solvothermal method with superior activity as well as excellent water vapor resistance and good stability have been successfully developed for the catalytic oxidation of CO at low temperatures. The catalyst with a Cu/Ce ratio of 2 : 8 (mol/mol) delivers a high CO conversion of 90% at 86 degrees C, and particularly, is stable for at least 50 h even in the presence of water vapor without deactivation. By extensive characterization including ICP-AES, XRD, N-2 adsorption measurement, Raman, XPS, H-2-TPR, CO-TPD, and in situ DRIFTs, it was found that the presence of abundant oxygen vacancies and strong interaction between CuO and CeO2 are responsible for the excellent catalytic performance of the CuO-CeO2 catalysts for low-temperature CO oxidation.
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