Acta Phys. -Chim. Sin. ›› 1998, Vol. 14 ›› Issue (05): 439-443.doi: 10.3866/PKU.WHXB19980511

• ARTICLE • Previous Articles     Next Articles

Effect of Supported Pt on Reduction and Sulfidation of Mo Based Catalysts

Yu Chun-Ying, Li Wen-Zhao, Wang Jun, Chen Yan-Xin, Zhang Ying-Zhen   

  1. Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023
  • Received:1997-08-08 Revised:1998-01-06 Published:1998-05-15
  • Contact: Yu Chun-Ying

Abstract:

 Effect of supported Pt on reduction and sulfidation for Pt/MoO3 and Pt/MOS2 catalysts were studied by pulse reduction-sulfidation, flow reduction-sulfidation, temperature programmed electrical conductivity, temperature programmed reduction technique and X ray diffraction analysis. It was found that, for Pt/MoO3 the addition of Pt greatly promoted the reduction and sulfidation of MoO3, it was also shown that, for Pt/MoS2 Pt obviously facilitated the reduction of MoS2 to form S-vacancy, leading to an increment of the concentration of coordinative unsaturated molybdenum.

Key words: MoO3, Pt/MoO3, TPR, XRD, Electrical conductivity