Characterization and performance of V2O5/CeO2 for NH3-SCR of NO at low temperatures

  • Caiting Li
  • Qun Li
  • Pei Lu
  • Huafei Cui
  • Guangming Zeng
Research Article
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Accepted:

Abstract

A series of CeO2 supported V2O5 catalysts with various loadings were prepared with different calcination temperatures by the incipient impregnation. The catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammonia (NH3). The effects of O2 and SO2 on catalytic activity were also studied. The catalysts were characterized by specific surface areas (SBET) and X-ray diffraction (XRD) methods. The experimental results showed that NO conversion changed significantly with the different V2O5 loading and calcination temperature. With the V2O5 loading increasing from 0 to 10 wt%, NO conversion increased significantly, but decreased at higher loading. The optimum calcination temperature was 400°C. The best catalyst yielded above 80% NO conversion in the reaction temperature range of 160°C–300°C. The formation of CeVO4 on the surface of catalysts caused the decrease of redox ability.

Keywords

V2O5/CeO2 catalysts NH3-SCR (selective catalytic reduction) the incipient impregnation low temperatures 
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Copyright information

© Higher Education Press and Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Caiting Li
    • 1
  • Qun Li
    • 1
  • Pei Lu
    • 1
  • Huafei Cui
    • 1
  • Guangming Zeng
    • 1
  1. 1.Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), College of Environmental Science and EngineeringHunan UniversityChangshaChina

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