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用准“原位”XPS技术研究了Mo／Al2O3、Mo／TiO2－Al2O3、CO／Al2O3、CO／TiO2－Al2O3、Co－Mo／Al2O3和Co－Mo／TiO2－Al2O3等催化剂的硫化过程．结果表明：对以Al2O3为载体的催化剂，当Mo或Co载量较低（分别低于0．05gMoO3／gAl2O3或0．03gCoO／gAl2O3）时，没有Mo或Co硫化物的生成，而以TiO2改性的Al2O3为载体的催化剂，Mo／TiO2－Al2O3催化剂的硫化较Mo／Al2O3容易得多,表现为在较低温度下，负载在TiO2改性Al2O3载体上的MoO3，能很快硫化并达到相当大的硫化度,对Co／Al2O3催化剂而言，即使在较高温度400℃时，载体上高分散的CoO物种仍难以硫化；而Co3O4微晶的硫化却容易得多,载体用TiO2改性，并不影响高分散形态的CoO催化剂的硫化，却明显地影响Co3O4微晶的硫化．噻吩加氢脱硫（HDS）的活性测量指出，对Co-Mo／Al2O3和Co－Mo／TiO2－Al2O3催化剂而言，HDS活性和硫化度之间存在着良好的相关性．并用TiO2改性载体，可以增加Co－Mo催化剂的HDS活性和硫化度．
The vulcanization of Mo / Al2O3, Mo / TiO2-Al2O3, CO / Al2O3, CO / TiO2-Al2O3, Co-Mo / Al2O3 and Co-Mo / TiO2- The results show that there is no formation of Mo or Co sulfide when the loading of Mo or Co is lower (less than 0.05gMoO3 / gAl2O3 or 0.03gCoO / gAl2O3, respectively) Al2O3 as carrier, Mo / TiO2-Al2O3 catalyst is much easier to cure than Mo / Al2O3. It shows that at a lower temperature, MoO3 supported on TiO2 modified Al2O3 carrier can be rapidly vulcanized and reach the equivalent Large degree of sulfidation, the Co / Al2O3 catalyst, even at higher temperatures 400 ℃, the carrier is highly dispersed CoO species is still difficult to sulfide; and Co3O4 microcrystalline sulfide is much easier, the carrier modified with TiO2, Does not affect the vulcanization of highly dispersed CoO catalysts, but significantly affects the sulfidation of Co3O4 crystallites. The activity measurement of thiophene hydrodesulfurization (HDS) indicates that there is a good correlation between HDS activity and degree of sulfidation for Co-Mo / Al2O3 and Co-Mo / TiO2-Al2O3 catalysts. And with TiO2 modified carrier, can increase the Co-Mo catalyst HDS activity and degree of cure.