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采用气相流动吸附法制备ＴｉＯ２／γ－Ａｌ２Ｏ３复合载体，用浸渍法使其担载一定量的ＭｏＯ３或ＣｏＯ－ＭｏＯ３．用ＸＲＤ、ＬＲＳ和ＴＰＲ等技术，考察了Ｍｏ或Ｃｏ－Ｍｏ催化剂的表面结构和还原性能，并用中压固定床反应装置测定催化剂的噻吩加氢脱硫（ＨＤＳ）和环己烯加氢（ＨＹＤ）的活性．结果表明，覆盖在γ－Ａｌ２Ｏ３上的ＴｉＯ２能减弱ＭｏＯ３与γ－Ａｌ２Ｏ３之间的相互作用，明显改善Ｍｏ催化剂的表面结构，促进ＭｏＯ３的还原，提高Ｍｏ催化剂的ＨＤＳ、ＨＹＤ活性．适量ＣｏＯ助剂的加入能促进ＭｏＯ３在载体表面的分散，明显提高Ｍｏ催化剂的ＨＤＳ活性．
The composite carrier of TiO2 / γ-Al2O3 was prepared by gas-phase flow adsorption method and impregnated with a certain amount of MoO3 or CoO-MoO3 by impregnation method. The surface structure and reduction performance of Mo or Co-Mo catalysts were investigated by XRD, LRS and TPR techniques. The catalysts HDS and cyclohexene hydrogenation (HYD) were measured with a medium pressure fixed bed reactor. Activity. The results show that the TiO2 coated on γ-Al2O3 can weaken the interaction between MoO3 and γ-Al2O3, improve the surface structure of Mo catalyst, promote the reduction of MoO3 and increase the HDS and HYD activity of Mo catalyst. The addition of proper amount of CoO promoter can promote the dispersion of MoO3 on the surface of the carrier and obviously improve the HDS activity of the Mo catalyst.