制备方法对Zr/Si-Al复合氧化物载体的影响  

INFLUENCE OF PREPARATION METHOD ON ZrO_2/SiO_2-Al_2O_3 COMPLEX SUPPORT

作　　者：徐黎明[1] 高玉兰[1] 李崇慧[1] 陈光[1] 

机构地区：[1]中国石油化工股份有限公司抚顺石油化工研究院,抚顺113001

出　　处：《石油炼制与化工》2008年第7期47-49,共3页Petroleum Processing and Petrochemicals

摘　　要：采用共沉淀法和共挤法制备了 Zr/Si-Al 复合氧化物载体。通过 XRD,BET,XPS,NH_3-TPD 等方法对该复合氧化物进行表征。结果表明,制备方法对载体的结构和物性有很大影响,采用共沉淀法加入助剂氧化锆有利于二氧化硅在复合氧化物载体表面的分散,降低金属组分和载体的结合力,从而提高催化剂的加氢活性。ZrO2/SiO2-Al2O3 complex support was prepared by co precipitation and extrusion respectively,and it was characterized by means of BET, XRD, XPS and NH3-TPD techniques. Test results showed that preparation method had significant influence on the structure and property of the complex support. When ZrO2 was added into the complex support by co-precipitation method, it was propitious to the dispersion of SiOe on the surface of the complex support and in favor of reducing the binding force between metals and support, thus the prepared catalyst exhibited enhanced hydrogenation activity.

关 键 词：共沉淀 挤压 氧化铝 氧化锆 二氧化硅 载体 

分 类 号：O643.36[理学—物理化学]