A comparative study of formaldehyde and carbon monoxide complete oxidation on MnOx-CeO2 catalysts |
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| Authors: | LIU Xuesong LU Jiqing QIAN Kun HUANG Weixin LUO Mengfei |
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| Affiliation: | [1]Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China [2]NationalLaboratory for Physical Sciences at the Microscale and Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, China |
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| Abstract: | MnOx-CeO2 composite catalysts were prepared by a coprecipitation method and tested for formaldehyde (HCHO) and carbon monoxide (CO) oxidation. X-ray photon spectroscopy (XPS) results indicated that the average oxidation state of surface Mn species in CeMn composite catalyst was higher compared to the pure MnOx. The enhancement of reactivity for HCHO oxidation was due to the activation of the lattice oxygen species in MnOx by the addition of CeO2, which was confirmed by the H2 temperature programmed reduction (H2-TPR) results. The remarkable enhancement of reactivity for CO oxidation by the addition of CeO2 was due to the active oxygen species generated on the CeO2 surface which directly participated in the reaction. |
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| Keywords: | MnOx-CeO2 catalysts complete oxidation HCHO CO rare earths |
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