Acta Chimica Sinica ›› 2002, Vol. 60 ›› Issue (6): 1006-1010. Previous Articles     Next Articles

Original Articles

铋钒钼复合氧化物催化剂结构与丙烷选择氧化催化性能

杨汉培;范以宁;冯令云;邱金恒;林明;许波连;陈懿   

  1. 南京大学化学系介观材料科学实验室,南京(210093)
  • 发布日期:2002-06-15

The Structure and Catalytic Properties of Bi-V-Mo-O Composite Oxide Catalysts for Selective Oxidation of Propane

Yang Hanpei;Fan Yining;Feng Lingyun;qiu Jinheng;Lin Ming;Xu Bolian;Chen Yi   

  1. Department of Chemistry, Laboratory of Mesoscopic Materials Science, Nanjing University,Nanjing(210093)
  • Published:2002-06-15

The structure and catalytic properties of Bi-V-Mo-O composite oxide catalysts with different composition for selective oxidation of propane have been studied by using X-ray diffraction (XRD), laser Raman spectroscopy (LRS), temperature-programmed reduction (TPR) and microreactor tests. It has been shown that Bi-V-Mo-O composite oxides formed scheelite-type structure, and the composition and structure of catalysts exert great influences on the catalytic properties for selective oxidation of propane. Increasing Mo content in the composite oxide catalysts, complete oxidation of propane can be suppressed, while the selectivity to acrolein increased to a maximum at Mo/(V+Mo) atomic ratio = 0.45. Further increasing the Mo content results in the remarkable decrease of acrolein selectivity. It has been suggested that the catalytic selectivity is correlated to the reactivity of oxygen ions species in the composite oxides.

Key words: BISMUTH OXIDE, VANADIUM OXIDE, MOLYBDENUM OXIDE, PROPANE, PROPENAL, OXIDATION, XRD, TPD

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