【摘要】 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．更多还原

【Abstract】 おiO₂/γAl₂O₃ complex support is prepared by using gas phase adsorption method and a definite amount of MoO₃ or CoOMoO₃ is deposited on the TiO₂/γAl₂O₃ by impregnation. Techniques including XRD, LRS, TPR, are used to study the surface structure and reduction behavior of Mo or Co-Mo catalyst. Thiophene hydrodesulfurization（HDS） and cyclohexene hydrogenation（HYD） activities of the catalyst are measured in a fixedbed reactor under 30 MPa H₂ pressure. The results reveal that TiO₂ covering γAl₂O₃ can weaken the interaction between MoO₃ and γAl₂O₃, improve effectively the surface structure of Mo catalyst, promote the reduction of MoO₃ and enhance the HDS and HYD activitiesA definite amount of CoO added into Mo catalyst can promote the dispersion of MoO3 on the surface of the support and effectively enhance the HDS activity of the Mo catalyst in a hydrotreating process.更多还原