【摘要】 利用 XRD、IR和 TPD等方法研究了铯对以 Mo Bi Pb O为骨架的多组分复合氧化物的结构、表面酸性和丙烯氨氧化性能的影响 ,结果表明 ,催化剂的主相为白钨矿型结构 ;铯的加入使催化剂的酸度下降 ,但酸强度提高 ,丙烯腈收率下降更多还原

【Abstract】 Adding Cs into the multicomponent complex oxide catalysts based on MoBiPbO, and the effects on the catalyst structures, surface acidities and propylene ammoxidation properties were studied by means of XRD, IR and TPD. The results showed that the main phases of catalysts are the Scheelitetype structures, and the total acidities decrease rapidly with the increasing of Cs atom ratio. In the mean time, the acid strenth of catalyst increase,but the yield for acrylonitrile drop gradually.更多还原