摘要
A Ce0.4Zr0.6O2 washcoat was prepared using an impregnation method, which acted as a host for the active Pd component to prepare a Pd-Ce0.4Zr0.6O2/substrate monolithic catalyst for toluene combustion. The catalyst was characterized by scanning electron microscopy （SEM）, Raman spectroscopy, Brunauner-Emmett-Teller （BET）, and carbon monoxide tonperature-programmed reduction （CO-TPR）. It was found that the washcoat had strong vibration-shock resistance according to an ultrasonic test. The Pd-Ce0.4Zr0.6O2/substrate monolithic catalyst calcined at 400 ℃ showed 95% toluene conversion at a temperature as low as 210 ℃. Furthermore, the lowest temperature for 95% toluene conversion was increased by 40℃ after the catalyst calcined at 900℃, indicating that the catalyst had good thermal stability. The results revealed that the developed catalyst in this study was promising for eliminating volatile organic compounds （VOCs）.
A Ce0.4Zr0.6O2 washcoat was prepared using an impregnation method, which acted as a host for the active Pd component to prepare a Pd-Ce0.4Zr0.6O2/substrate monolithic catalyst for toluene combustion. The catalyst was characterized by scanning electron microscopy （SEM）, Raman spectroscopy, Brunauner-Emmett-Teller （BET）, and carbon monoxide tonperature-programmed reduction （CO-TPR）. It was found that the washcoat had strong vibration-shock resistance according to an ultrasonic test. The Pd-Ce0.4Zr0.6O2/substrate monolithic catalyst calcined at 400 ℃ showed 95% toluene conversion at a temperature as low as 210 ℃. Furthermore, the lowest temperature for 95% toluene conversion was increased by 40℃ after the catalyst calcined at 900℃, indicating that the catalyst had good thermal stability. The results revealed that the developed catalyst in this study was promising for eliminating volatile organic compounds （VOCs）.
基金
Project supported by Zhejiang Provincial Nature Science Foundation of China (203147)
the National Natural ScienceFoundation of China (20473075)
