节点文献
Influence of Ce0.35Zr0.55Y0.10 Solid Solution on Performance of Pt-Rh Three-Way Catalysts
【Abstract】 Ce0.35Zr0.55Y0.10 solid solution was prepared by co-precipitation technique and characterized by specific surface area measurements (BET) and X-ray diffraction (XRD). Ce0.35Zr0.55Y0.10 was used to prepare low Pt-Rh three-way catalyst (TWC), and its influence on the performance of TWC was investigated. The results revealed that Ce0.35Zr0.55Y0.10 had a cubic structure similar to Ce0.50Zr0.50O2 and its specific surface area can maintain higher than Ce0.50Zr0.50O2 after 1000 ℃ calcination for 5 h. Being hydrothermal aged at 1000 ℃ for 5 h, the catalyst containing Ce0.35Zr0.55Y0.10 still exhibited higher conversion of C3H8, CO and NO and lower light-off temperature in comparison with Ce0.50Zr0.50O2 TWC.
【关键词】 low precious metal；
three-way catalysts；
rare earths；
【Key words】 low precious metal； three-way catalysts； rare earths；
【Key words】 low precious metal； three-way catalysts； rare earths；
【基金】 Project supported by the National Natural Science Foundation of China (20273043);the National Natural Science KeyFoundation of China (20333030)
- 【文献出处】 Journal of Rare Earths ,稀土学报(英文版) , 编辑部邮箱 ,2007年02期
- 【分类号】O643.36
- 【被引频次】5
- 【下载频次】99