Abstract
Alumina modified by MgO as the catalyst support loading Co3O4 for the N2O decomposition were investigated. It was found that MgAl2O4 was formed over the alumina surface by the MgO reacting with Al2O3 after calcination at 900 °C and using the composited support containing 30 wt% MgO loading Co3O4 can effectively suppress undesired CoAl2O4 formation under 700 °C. In the 20Co/30Mg–Al catalyst, it was found that about half of the cobalt is present as (Co,Mg)O solid solution and the rest exists as Co3O4, as characterized by Raman spectroscopy and H2-TPR. The catalyst exhibited much higher and stable activity for the N2O decomposition compared with the 20Co/Al without MgO modification.
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This work was financially supported by the National Natural Science Foundation of China (Grant Nos. 21277019 and 21777015).
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Li, Y., Wang, X. MgO Modifying Al2O3 to Load Cobalt Oxide for Catalytic N2O Decomposition. Catal Lett 149, 1856–1863 (2019). https://doi.org/10.1007/s10562-019-02789-5
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DOI: https://doi.org/10.1007/s10562-019-02789-5