干燥温度对Co/SiO_2费托合成催化剂结构和性能的影响  

Effects of dry temperature on the structure and properties of Co/SiO_2 catalyst for Fischer-Tropsch synthesis

作　　者：胡亮华[1] 王小琴[1] 宁文生[1] 刘化章[1] 

机构地区：[1]浙江工业大学工业催化研究所,浙江杭州310032

出　　处：《工业催化》2011年第10期14-18,共5页Industrial Catalysis

基　　金：国家高技术研究发展计划(863计划)(2009AA05Z435)资助项目;浙江省自然科学基金(Y4100410)资助项目

摘　　要：采用浸渍法制备了钴负载质量分数15%的Co/SiO_2催化剂,考察干燥温度对催化剂性能的影响。随着干燥温度升高,催化剂活性先增大后减小,但对产物选择性没有明显影响。BET、SEM、XRD和H_2-TPR测定结果表明,改变干燥温度可以影响钴在催化剂中的分布状态,从而使催化剂结构、晶粒度和还原性能发生相应变化,这些效应的叠加导致干燥温度90℃时制备的Co/SiO_2催化剂具有最好的反应活性。Co/SiO2 catalysts with 15% Co（ mass fraction） were prepared by impregnation method and characterized by BET, SEM, XRD and H2-TPR. The effects of dry temperature on the performance of the catalysts for Fischer-Tropsch synthesis were investigated. The results showed that the catalyst activity first increased and then decreased with the increase of dry temperature, and had no evidently influence on the selectivity tO the product;the change of dry temperature could influence on Co distribution in the catalysts, and then the structure, crystal size and reducibility of the catalysts had correspondingly change. Co/ SiO2 catalyst dried at 90℃ exhibited the highest activity.

关 键 词：催化剂工程 费托合成 钴基催化剂 二氧化硅 干燥温度 

分 类 号：TQ426.6[化学工程] O643.36[理学—物理化学]