Cerium Oxide-Based Catalysts for Low-Temperature Selective Catalytic Reduction of NOx with NH3: A Review

  • Jue Zhou
    Jue Zhou
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    More by Jue Zhou
  • Rui-tang Guo*
    Rui-tang Guo
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    Shanghai Institute of Pollution Control and Ecological Security, Shanghai 200092, China
    Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai 200090, China
    *Email: [email protected]
    More by Rui-tang Guo
  • Xin-fu Zhang
    Xin-fu Zhang
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    More by Xin-fu Zhang
  • Yuan-zhen Liu
    Yuan-zhen Liu
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
  • Chao-peng Duan
    Chao-peng Duan
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
  • Gui-lin Wu
    Gui-lin Wu
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    More by Gui-lin Wu
  • , and 
  • Wei-guo Pan*
    Wei-guo Pan
    College of Energy and Mechanical Engineering, Shanghai University of Electric Power, Shanghai 200090, China
    Shanghai Engineering Research Center of Power Generation Environment Protection, Shanghai 200090, China
    *Email: [email protected]
    More by Wei-guo Pan
Cite this: Energy Fuels 2021, 35, 4, 2981–2998
Publication Date (Web):February 1, 2021
https://doi.org/10.1021/acs.energyfuels.0c04231
Copyright © 2021 American Chemical Society
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Abstract

The selective catalytic reduction (SCR) of NOx with ammonia is an effective method to remove NOx from stationary and mobile sources. Cerium oxides (CeOx) have been studied extensively as low-temperature SCR catalysts since they manifest prominent oxygen storage capacity in catalysis. This paper reviews the recent progress on the Ce-based catalysts for low-temperature SCR de-NOx with NH3, including three categories, single CeOx, Ce-based multimetal oxide, and Ce-based multimetal oxides with support. In the section on single CeOx, the reasons for the significant catalytic activity and the function of CeOx in the catalytic reactions are systematically reviewed. For multimetal oxide catalysts, the various roles played by the components of catalysts are summarized from several aspects. In the introduction of supported metal oxide catalysts, according to the type of support, the function of each support in the reaction is analyzed methodically. Additionally, we investigated the reaction mechanism of low-temperature SCR of NOx, including Eley–Rideal (E–R) and Langmuir–Hinshelwood (L–H) mechanisms. Finally, the development outlook and direction of the application of cerium oxide-based catalysts in the field of low-temperature SCR of NOx is prospected.

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