Synthesis of Silica-Dispersed NiMo Hydrodesulfurization Catalysts

作     者：Liu Di Liu Lihua Li Guangci Liu Chenguang (State Key Laboratory of Heavy Oil Processing,CNPC Key Laboratory of Catalysis, China University of Petroleum,Qingdao 266555) 

作者机构：China Univ Petr State Key Lab Heavy Oil Proc CNPC Key Lab Catalysis Qingdao 266555 Peoples R China 

出 版 物：《China Petroleum Processing & Petrochemical Technology》 (中国炼油与石油化工（英文版）)

年 卷 期：2010年第12卷第4期

页      面：18-22页

核心收录：

学科分类：081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the financial support from the National Basic Research Program(No. 2010CB226905) of China 

主　　题：hydrodesulfurization NiMo SiO2 Gel Surface area 

摘      要：Silica-dispersed NiMo hydrodesulfurization catalysts were synthesized by the deposition-precipitation method. For comparative purposes, bulk NiMo catalysts were obtained by co-precipitation. The silica-dispersed NiMo catalyst had highly active metals content. Silica was employed to disperse active metals for full utilization of active components. The BET analysis showed that the silica-dispersed NiMo catalysts had a high surface area （147.0 m2/g） and pore volume （0.27 mL/g）, whereas the bulk NiMo catalysts exhibited a very low surface area （87.5 m2/g）. Transmission electron microscopy results proved that the active components were dispersed on the SiO2 substrate. X-ray diffraction patterns of the silicadispersed NiMo catalyst and the bulk NiMo catalyst were indexed to NiMoO4. The hydrodesulfurization activity of silicadispersed NiMo catalysts was much higher than that of reference catalysts and could be up to twice greater than those of commercial NiMo alumina-supported systems per gram of catalyst. The activity testing results also demonstrated that the silica-dispersed NiMo catalyst was an effective hydrodesulflarization catalyst.