为了更好地认识加氢脱硫和催化加氢反应中的载体影响和助剂效应,在同样的催化剂制备方法及反应条件下,研究了噻吩加氢脱硫(HDS)和四氢萘催化加氢(HYD)反应. 结果表明,对于无助剂的Mo和W催化剂,载体对催化活性的影响顺序为TiO2-Al2O3＞ZrO2＞Al2O3. 助剂的添加改变了催化剂活性顺序. Ni助剂催化剂的活性明显高于Co助剂催化剂. ZrO2担载的添加Ni的Mo和W催化剂分别获得了最佳的HDS和HYD活性. 然而,添加Pt的Mo和W催化剂其HDS和HYD活性仅是Pt与Mo(W)二者的加和,Pt与Mo(W)之间没有协同效应. 先将担载的Mo和W预硫化再将助剂引入体系的催化剂制备方法可以避免Ni和Co过早硫化形成类硫化镍(或硫化钴)物相,与采用螯合物分子方法制备的催化剂间有一定的相似性.
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