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Citation: HUANG Hai-feng, CHEN Yi-jie, YANG Rui, ZHU Qiu-lian, LU Han-feng. Fe-V/TiO2 catalysts for selective catalytic reduction of NOx with NH3 in diesel exhaust[J]. Journal of Fuel Chemistry and Technology, ;2014, 42(6): 751-757. shu

Fe-V/TiO2 catalysts for selective catalytic reduction of NOx with NH3 in diesel exhaust

  • 1.

    1. College of Biological and Environmental Engineering, Zhejiang University of Technology, Hangzhou 310014, China;

  • Corresponding author: LU Han-feng, 
  • Received Date: 14 November 2013
    Available Online: 24 February 2014

    Fund Project: 国家自然科学基金(21107096) (21107096)浙江省重大科技专项(2007C13042)。 (2007C13042)

  • Fe-V/TiO2 catalysts with different Fe/V molar ratio were prepared by impregnation method. The catalytic activity of selective catalytic reaction (SCR) were evaluated at the simulation of diesel exhaust environment. The samples were characterized by thermogravimetric analysis, X-ray diffraction, H2 temperature programmed reduction, NH3 temperature-programmed desorption and Raman spectra. It was found that the addition of Fe could obviously decrease the losing of V2O5 at high temperature, which greatly decreased the toxicity of the vanadium-based catalysts in mobile sources. Among the synthesized catalysts, the Fe1-V1/TiO2 showed the highest activity with the NOx conversion efficiency over 90% between 220 ℃ and 420 ℃ due to formation of FeVO4 active sites. Moreover, Fe1-V1/TiO2 exhibited excellent thermal stability at high temperature and sulfur resistance.
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