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Reaction Kinetics, Mechanisms and Catalysis

, Volume 124, Issue 2, pp 603–617 | Cite as

Influence of calcination temperature on the plate-type V2O5–MoO3/TiO2 catalyst for selective catalytic reduction of NO

  • Li Huang
  • Yuhao Zong
  • Hu Wang
  • Qian Li
  • Tao Chen
  • Lin Dong
  • Weixin Zou
  • Kai Guo
Article

Abstract

A series of plate-type V2O5–MoO3/TiO2 catalysts for selective catalytic reduction (SCR) of NO from flue gas were prepared and calcined at different temperatures. XRD, XRF, N2-adsorption, Raman, H2-TPR, NH3-TPD and XPS were used to characterize the catalysts. From the experimental results, plate-type V2O5–MoO3/TiO2 catalyst calcined at 500 °C showed the best performance in the SCR of NO. Compared with the catalyst calcined at 440 °C, the calcination in the range of 500–620 °C resulted in an increase of polymeric vanadate and the augmentation of catalytic acidity. Furthermore, the V4/V5+, (V4+ + V3+)/V5+ and Oα/(Oα + Oβ) ratio of the catalysts also increased with the increase of calcination temperature, which resulted in the high catalytic efficiency in the SCR reaction. However, the higher calcination temperature would lead to the inevitable formation of N2O at high reaction temperatures (> 370 °C). Meanwhile, high calcination temperature resulted in decreased mechanical strength of the catalyst.

Keywords

NOx SCR Calcination temperature Plate-type 

Notes

Acknowledgements

The authors are grateful to the financial supports of the Fund Project for Transformation of Scientific and Technological Achievements of Jiangsu Province of China (Grant No. BA2017095).

Supplementary material

11144_2018_1378_MOESM1_ESM.docx (735 kb)
Supplementary material 1 (DOCX 734 kb)

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • Li Huang
    • 1
  • Yuhao Zong
    • 1
  • Hu Wang
    • 1
  • Qian Li
    • 1
  • Tao Chen
    • 1
  • Lin Dong
    • 2
  • Weixin Zou
    • 2
  • Kai Guo
    • 2
  1. 1.Datang Nanjing Environmental Protection Technology Co., LtdNanjingChina
  2. 2.Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical EngineeringNanjing UniversityNanjingChina

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