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Citation: ZHANG Wei, LIU Xiao-dan, BAI Ying-zhi, WANG Hai-yan, WEI Min. Study on the structure and performance of MoO3-ZrO2 composite catalysts with different Mo/Zr mass ratios[J]. Journal of Fuel Chemistry and Technology, ;2015, 43(8): 998-1003. shu

Study on the structure and performance of MoO3-ZrO2 composite catalysts with different Mo/Zr mass ratios

  • 1.

    1. School of Petrochemical Engineering, Liaoning Shihua University, Fushun 113001, China;

  • Corresponding author: WANG Hai-yan, 
  • Received Date: 4 January 2015
    Available Online: 26 March 2015

    Fund Project: 国家自然科学基金(21276253)。 (21276253)

  • Mesoporous MoO3-ZrO2 composite oxides were prepared by sol-gel method. The influence of the mass ratio of MoO3/ZrO2 on the crystal phase, specific surface area, pore size and morphology characteristics were investigated. The synthesized composite oxides were characterized by XRD, BET, SEM and FT-IR. With FCC gasoline fraction as the raw material, the catalytic activity was evaluated by hydrodesulfurization reaction after the prevulcanization of the composite oxides. The results show that the ZrO2 containing MoO3 had less monoclinic phase than ZrO2 and mainly existed in stable tetragonal phase. The appropriate improvement of the mass ratio of MoO3/ZrO2 were beneficial to the increase of specific surface area and average pore size. The excessive mass ratio of MoO3/ZrO2 depressed the formation of mesopores and produced a new type chemical bond and a small amount of Zr(MoO4)2 crystal phase. When the mass ratio of MoO3/ZrO2 was 30%, the worm structure appeared on the surface of ZrO2, and the desulfurization rate reached its maximum. Thus, the appropriate improvement of the mass ratio of MoO3/ZrO2 could obtain a higher desulfurization rate.
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