摘要
采用气相流动吸附法制ＴｉＯ２／γ－Ａｌ２Ｏ３复合载体，浸渍法担载一定量ＭｏＯ３用ＸＲＤ，ＴＰＲ方法考察ＭｏＯ３的分散状态，中压固定床反应装置测定催化剂的噻吩加氢脱硫和环己烯加氢活性，结果表明，ＴｉＯ２的加入能减弱ＭｏＯ３与γ－Ａｌ２Ｏ３间的相互作用，促进ＭｏＯ３的还原，提高催化剂的加氢脱硫活性。
TiO 2/γ-Al 2O 3 complex support was prepared by gas phase adsorption method and molybdena was deposited on titania-alumina by impregnation of (NH 4) 6Mo 7O 24 ·4H 2O solution.XRD and TPR were used to study the dispersion state of MoO 3 on the surface of support.Thiophene hydrodesulfurization (HDS),cyclohexane hydrogenation (HYD) activities of catalysts are measured in a fixed-bed reactor under 3.0 MPa H 2 pressure.The results reveal that the coverage of TiO 2 on γ-Al 2O 3 can weaken the interaction between MoO 3 and γ-Al 2O 3 and TiO 2 promotes the reduction of MoO 3 easier.The coverage of TiO 2 on γ-Al 2O 3 can improve effectively the HDS catalyst activity of molybdenum catalyst in hydrotreating process.
出处
《南昌大学学报（理科版）》
CAS
1998年第1期77-80,共4页
Journal of Nanchang University(Natural Science)
基金
福建省自然科学基金
宁德师专科研基金
