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摘要
A series of mesoporous CeO2 supported noble metal (Pt, Pd, Au and Ag) catalysts, fabricated through a facial pyrolysis and in situ reduction protocol, were used for formaldehyde elimination under ambient conditions. The materials possessed relatively high specific surface area and uniformly dispersed noble metal nanoparticles, and showed very high catalytic activities for formaldehyde oxidation. For about 1 wt% noble metal loaded materials, Pt/CeO2, Pd/CeO2 and Au/CeO2 catalysts could completely catalytically oxidize HCHO at room temperature. Even for the low activity Ag/CeO2 catalyst, the complete conversion temperature could reach 100 degrees C, much lower than that reported before. Such good catalytic properties could be attributed to the strong synergetic interaction between the active component and CeO2 nano-crystalline aggregated support. The reaction mechanism over the noble-metal/CeO2 catalyst was also discussed through in situ DRIFTS analysis.
- 出版日期2015
- 单位华东理工大学
