The results are showed as follows.Lewis(Louis) acid sites exist on the surface of α-Alumina support and silver catalyst.Pyridine, the basic absorbate, can be adsorbed on its Lewis (Louis)acid sites.
研究表明: 在体α-氧化铝和银催化剂表面都存在L中心,碱性吡啶能于其L, 体α-氧化铝负银之后,其性中心浓度有所降低,在银催化剂内加入一定量的助催化剂铯后,其性中心浓度又有了明显下降。