Copper Oxide Clusters Stabilized by Ceria for CO, C3H6, and NO Abatement

doi:10.1016/S1872-2067(11)60417-8

Abstract

Abstract: A strong interaction between a metal oxide and support has long been indicative of its promotion of catalytic activities. In connection with this, we investigated the interaction of CuO with γ-Al₂O₃ and CeO₂ for producing highly efficient catalysts for CO, C₃H₆, and NO abatement. In particular, the dispersion and thermal aging resistance of CuO clusters on different supports were studied. CuO clusters can be stabilized by interaction with CeO₂, while on γ-Al₂O₃ they aggregated into larger particles at high CuO loadings. On the other hand, due to the poor thermal stability of CeO₂, CuO clusters dispersed on it were sintered during an aging treatment at 950 ^oC. Accordingly, by pre-dispersing CeO₂ on γ-Al₂O₃followed by CuO dispersion, stabilized CuO clusters were obtained that were based on the superior aging resistance of the γ-Al₂O₃ support. Therefore, better catalytic performance and thermal aging properties were obtained with a CuO/CeO₂/γ-Al₂O₃ catalyst as compared with CuO/γ-Al₂O₃ and CuO/CeO₂ samples.

Key words: copper oxide clusters, stability, surface interaction, carbon monoxide, propene, nitric oxide, catalytic abatement

SHI Chuan, XU Li, ZHU Ai-Min, ZHANG Yu-Zhuo, QU Ze-Tang. Copper Oxide Clusters Stabilized by Ceria for CO, C₃H₆, and NO Abatement[J]. Chinese Journal of Catalysis, 2012, 33(9): 1455-1462.

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https://www.cjcatal.com/EN/Y2012/V33/I9/1455

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Copper Oxide Clusters Stabilized by Ceria for CO, C₃H₆, and NO Abatement

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