Citation: SONG Zhong-xian, DU Hui-xian, ZHAO Bao-lin, LIU Xue-ping, KANG Hai-yan, LIU Biao, MAO Yan-li, FU Yong-mei, LIU Pan, GUO Yi-fei. Study on the synergistic effect of CeO₂ and WO₃ on the catalytic performance of CeO₂-WO₃ for the selective catalytic reduction of NO_x by NH₃[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(9): 1129-1136. shu

Study on the synergistic effect of CeO₂ and WO₃ on the catalytic performance of CeO₂-WO₃ for the selective catalytic reduction of NO_x by NH₃

1.
Henan University of Urban Construction, Henan Province Key Laboratory of Water Pollution Control and Rehabilitation Technology, Pingdingshan 467000, China
2.
Zhengzhou University, College of Chemistry and Molecular Engineering, Zhengzhou 450001, China

Corresponding author: GUO Yi-fei, 30020005@hncj.edu.cn
Received Date: 3 April 2019
Revised Date: 12 July 2019

Fund Project: The project was supported by the Doctoral Research Start-up Project of Henan University of Urban Construction (990/Q2017011)the Doctoral Research Start-up Project of Henan University of Urban Construction 990/Q2017011

Figures(6)

The CeO₂, WO₃ and CeO₂-WO₃ (donated as CW) catalysts were prepared by in-situ self-assembly method and used for the low-temperature selective catalytic reduction (SCR) of NO_x with NH₃. The results showed that CW catalysts possessed the most microspore and maximum pore volume and larger specific surface area with the addition of WO₃, resulting in the improvement to the catalytic performance. Besides, the interaction of Ce and W was improved by the introduction of WO₃, which could increase the amount of Ce³⁺ and O_α. Meanwhile, the enhancement of weak and medium strong acid sites was caused by the introduction of WO₃. Thus, CW catalyst showed the best SCR activity and its NO_x conversion at the value of 100% maintained in a wide temperature window ranging from 250 to 400 ℃.
- WO₃,
- CeO₂,
- selective catalytic reduction,
- surface acidity,
- redox property
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Study on the synergistic effect of CeO2 and WO3 on the catalytic performance of CeO2-WO3 for the selective catalytic reduction of NOx by NH3

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通讯作者: 陈斌, bchen63@163.com

Study on the synergistic effect of CeO₂ and WO₃ on the catalytic performance of CeO₂-WO₃ for the selective catalytic reduction of NO_x by NH₃