Citation:
PENG Li-li, HUANG Yan, LI Jian-guang, ZHANG Jun-feng. Catalytic performance of CoOx-CeOx/ZrO2 in NO oxidation and its resistance against SO2[J]. Journal of Fuel Chemistry and Technology,
;2012, 40(11): 1377-1383.
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A series of CoOx-CeOx/ZrO2 catalysts for NO oxidation were prepared by impregnation method and characterized by XRD, BET and H2-TPR. The influence of the support as well as the content of cerium and cobalt on the catalytic performance of CoOx-CeOx/ZrO2 in NO oxidation was investigated. The results indicated that the addition of Ce may improve the adsorption ability of the Co-based catalyst for oxygen and the dispersion of active cobalt species. Compared with CoOx/ZrO2 and CeOx/ZrO2, the CoOx-CeOx/ZrO2 catalysts exhibit higher activity and better resistance against SO2 for NO oxidation at low temperature.
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Keywords:
- CoOx-CeOx/ZrO2,
- oxidation NO,
- SO2 resistance
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