以γ-Al₂O₃为载体，分别采用超声浸渍法和常规浸渍法制备催化剂。通过NH₃-TPD、TPR、N₂吸附、X射线衍射、XPS等手段对催化剂的孔结构和理化性质进行分析，考察了浸渍方法对催化剂使用性能的影响。结果表明：超声浸渍法制备的催化剂比表面积和孔体积增加，酸量变大，提高了催化剂的反应活性；活性组分与载体间相互作用力减小，使活性组分易于还原；同时MoS₂片晶层数增多，平均长度缩短，可改善活性组分的分散性，活性中心的数目增加。催化剂评价结果表明，与常规浸渍法相比，超声浸渍法制备的催化剂的使用性能得到很好的改善。

Using γ-Al₂O₃ as carrier,catalysts are prepared by ultrasonic impregnation method and conventional impregnation method respectively.The pore structure and physical/chemical properties of prepared catalysts are characterized by NH₃-TPD,TPR,N₂ adsorption,X-ray diffraction and XPS respectively.The influences of impregnation way on the service performance of catalysts are investigated.The results show that the catalyst prepared by ultrasonic impregnation method has higher specific surface area,larger pore volume,bigger acid amount,improved reactivity,and smaller interaction force between active component and carrier.The active components of this catalyst prepared by ultrasonic impregnation method are easier to restore.At the same time,it has more MoS₂ crystal layers and shorter average length.It can improve the dispersion of active components and increase the number of active centers.Compared with the conventional impregnation method,the catalyst prepared by ultrasonic impregnation method has better performances.

唐兆吉(1981-),男,硕士,工程师,主要从事加氢处理催化剂的研发,024-56389710,tangzhaoji.fshy@sinopec.com。