By using XPS,before and after the intoxication of mixed oxide catalysts,the various appearance and the composition. valence and chemical mechanism of the active component of catalysts were studied.

• 运用XPS分析方法研究一系列复合氧化物催化剂中毒前后硫在其表面的各种形态及催化剂活性组分中毒前后的组成、价态、化学机理及其变化。