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CeO2形貌对Pt/CeO2催化氧化甲苯活性的影响
CeO2 morphology effect on catalytic activity of Pt/CeO2 for toluene oxidation
【Author】 CHANG Shengsheng;QIAN Fuping;GUO Lina;School of Energy and Environment, Anhui University of Technology;
【机构】 安徽工业大学能源与环境学院；
【摘要】 制备了具有不同形状的纳米棒,纳米八面体和纳米立方体的CeO2,并将其用作制备Pt/CeO2-r（110）,Pt/CeO2-o（111）和Pt/CeO2-c（100）。通过各种表征对这些样品进行了讨论,以实现CeO2的形态对甲苯氧化的理化特性和催化性能的影响。表征结果表明,由于Pt/CeO2-r在载体表面上具有最大的Pt纳米颗粒分散性,因此对甲苯表现出最优异的催化性能。此外,表面吸附的大量氧气对提高氧化效率起着至关重要的作用。
【Abstract】 CeO2 with different shapes of nanorods, nano-octahedrons and nanocubes were prepared and utilized as supports for the preparation of Pt/CeO2-r（1 1 0）, Pt/CeO2-o（1 1 1） and Pt/CeO2-c（1 0 0）, respectively. These samples were discussed with all sorts of characterizations to realize various morphologies influence of CeO2 on physical and chemical feature and catalytic performances of toluene oxidation. Characterizations revealed that Pt/CeO2-r exhibited the most excellent catalytic performances owing to its the highest dispersion of Pt nanoparticles on the surface of the carrier. Moreover, the abundance of surface adsorbed O2 played a vital effect in the enhancement of oxidation efficiency.
- 【会议录名称】 第十一届全国能源与热工学术年会论文集
- 【会议名称】第十一届全国能源与热工学术年会
- 【会议时间】2021-07-15
- 【会议地点】中国安徽马鞍山
- 【分类号】O643.36;X701
- 【主办单位】中国金属学会能源与热工分会