Citation: WANG Yong-qiang, XIAO Li, SUN Qi-meng, ZHAO Chao-cheng, LI Shi. Preparation of the Pd/La0.8Ce0.2MnO3/ZSM-5 catalyst and its performance in catalytic combustion of toluene[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(9): 1146-1152. shu

Preparation of the Pd/La0.8Ce0.2MnO3/ZSM-5 catalyst and its performance in catalytic combustion of toluene

  • Corresponding author: WANG Yong-qiang, 
  • Received Date: 10 February 2014
    Available Online: 10 May 2014

    Fund Project: 国家自然科学基金(51202294) (51202294)中央高校基本科研业务费专项资金(24720142054A) (24720142054A)中国石油大学(华东)研究生自主创新项目(13CX06054A)。 (华东)研究生自主创新项目(13CX06054A)

  • Pd/La0.8Ce0.2MnO3/ZSM-5 catalysts were prepared by incipient wetness impregnation and characterized by nitrogen physical adsorption, X-ray diffraction (XRD), scanning electron microscope (SEM), and temperature-programmed reduction (H2-TPR). The catalytic combustion of toluene as a target pollutant over the Pd/La0.8Ce0.2MnO3/ZSM-5 catalysts was investigated in a fixed-bed reactor and the effect of calcination temperature, active component loading and ZSM-5 properties on the catalytic performance was investigated. The results indicated that the Pd/La0.8Ce0.2MnO3/ZSM-5 preserves the perovskite structure and the active Pd component is evenly dispersed on the catalyst surface, which endures the catalyst with high activity in toluene combustion. Over the La0.8Ce0.2MnO3/ZSM-5 catalyst with La0.8Ce0.2MnO3 loading of 20%, ZSM-5 Si/Al atomic ratio of 25, and calcination temperature of 750℃, the ignition and complete combustion temperatures for toluene combustion are only 200 and 279℃, respectively. After being modified with 0.3% Pd, the activity of the Pd/La0.8Ce0.2MnO3/ZSM-5 catalyst is even largely enhanced; over it, the ignition temperature for toluene combustion is decreased by 90℃ and complete combustion is achieved at 230℃.
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