Abstract
A series of NiO-CeO2 mixed oxide catalysts prepared by the hydrothermal method were investigated for the decomposition of N2O. It was found that the addition CeO2 to NiO catalyst leads to a noticeable enhancement of the activity for the decomposition of N2O. The introduction of CeO2 inhibited the crystallization of the NiO phase, leading to the high surface area. In particular, the co-presence of NiO and CeO2 exhibited a synergetic effect, which contributes to forming the stabilized Ni2+ active sites. All of these factors, collectively, accounted for the high activity of NiO-CeO2 mixed oxide catalyst for the decomposition of N2O.
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