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首页> 外文期刊>RSC Advances >Highly efficient formaldehyde elimination over meso-structured M/CeO2 (M = Pd, Pt, Au and Ag) catalyst under ambient conditions
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Highly efficient formaldehyde elimination over meso-structured M/CeO2 (M = Pd, Pt, Au and Ag) catalyst under ambient conditions

机译：在环境条件下通过介孔结构M / CeO2（M = Pd，Pt，Au和Ag）催化剂高效去除甲醛

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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.
机译：通过表面热解和原位还原方案制备的一系列介孔CeO2负载的贵金属（Pt，Pd，Au和Ag）催化剂用于在环境条件下消除甲醛。该材料具有相对较高的比表面积和均匀分散的贵金属纳米颗粒，并且显示出非常高的甲醛氧化催化活性。对于约1 wt％的贵金属负载材料，Pt / CeO2，Pd / CeO2和Au / CeO2催化剂在室温下可以完全催化氧化HCHO。即使对于低活性的Ag / CeO2催化剂，完全转化温度也可以达到100摄氏度，远低于以前报道的温度。如此好的催化性能可归因于活性组分与CeO2纳米晶体聚集载体之间的强协同作用。通过原位DRIFTS分析，探讨了贵金属/ CeO2催化剂的反应机理。

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