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研究了固体催化剂 La VO4及附载上其它元素 (V.Nb.Mo)后表面酸碱性的变化及对丙烯催化选择性的关系 ,结果显示 ,当 La VO4固体催化剂掺杂 2 0 %的 Nb时 ,其表面酸碱度最小 ,对丙烯催化的选择性最好
The change of surface acidity and basicity and the catalytic selectivity to propylene on the solid catalyst LaVO4 and other supported elements (V.Nb.Mo) were studied. The results show that when LaO4 solid catalyst is doped with 20% Nb , The surface pH of the smallest, the best selectivity of propylene catalyst