Abstract
Binary copper manganese oxides catalysts supported on different activated carbons were prepared using the co-precipitation and high-pressure impregnation methods. The catalysts were further modified by KOH to mitigate the adverse effect of CO2 on their CO oxidation performances. The as-synthesized catalysts were characterized by N2 adsorption–desorption, X-ray diffraction, field emission scanning electron microscopy, and Fourier transform infrared spectroscopy. The effects of support and synthesis method, CO concentration, CO2 concentration, gas hourly space velocity (GHSV), and particle size on CO oxidation performances of the catalysts were investigated. The nature of the different activated carbon supports showed no significant effect on their CO oxidation performances. By contrast, the high-pressure impregnation method was conducive to more effective loading and uniform dispersion of the active components on the support and therefore to benefit the catalyst enhanced CO oxidation performances. Under the given experimental conditions, CO oxidation conversion decreased with the increase of CO concentration, CO2 concentration, GHSV, and particle diameter.
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Financial support from the National Natural Science Foundation of China (U1510129 and 51323010) and the Fundamental Research Funds for the Central Universities (WK2320000034) is sincerely acknowledged. The authors also wish to acknowledge Dr. Yanming Ding for the English editing for this article.
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Guo, Y., Lu, S., Lin, J. et al. Reaction characteristics of KOH-modified copper manganese oxides catalysts for low-temperature CO oxidation in the presence of CO2 . Reac Kinet Mech Cat 120, 149–165 (2017). https://doi.org/10.1007/s11144-016-1079-5
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DOI: https://doi.org/10.1007/s11144-016-1079-5