Effects of promoters on catalytic performance of Fe-Co/SiO_2 catalyst for Fischer-Tropsch synthesis

作     者：Xiangdong Ma Qiwen Sun Weiyong Ying Dingye Fang 

作者机构：Chemical Engineering ＆ Pharmaceutics College Henan University of Science and Technology Luoyang 471003 Henan China Shanghai Yankuang Energy RD Co.Ltd Shanghai 201203 China School of Chemical Engineering East China University of Science and Technology Shanghai 200237 China 

出 版 物：《Journal of Natural Gas Chemistry》 (天然气化学杂志（英文版）)

年 卷 期：2009年第18卷第3期

页      面：354-358页

核心收录：

学科分类：081702[工学-化学工艺] 0808[工学-电气工程] 081705[工学-工业催化] 0817[工学-化学工程与技术] 08[工学] 0807[工学-动力工程及工程热物理] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：supported by the Doctoral Foundation (NO. 20050251006) Scholastic Foundation of Henan University of Science and Technology 

主　　题：Fischer-Tropsch synthesis bimetallic iron cobalt promoter potassium zirconium 

摘      要：2%Fe-10%Co/SiO2 catalysts with different potassium or zirconium loadings were prepared by aqueous incipient wetness impregnation and tested for Fischer-Tropsch synthesis in a flow reactor, using H2/CO = 1.6 （molar ratio） in the feed, under the condition of an overall pressure of 1 MPa, GHSV of 600 h^-1 and temperature of 503 K. The zirconium and potassium promoters remarkably influenced hydrocarbon distribution of the products. CO conversion increased on the catalysts with the increase of zirconium loadings, which indicated that zirconium enhanced the activity of iron-cobalt catalysts. Low potassium loadings also enhanced the activity of the catalysts. However, high potassium loading made CO conversion on the catalysts decrease and weakened the secondary hydrogenations. The catalyst was characterized by BET, XRD and TPR. The catalyst characterization revealed that the Co3O4 phase was presented on the fresh catalyst, whereas the spinel phase of Fe-Co alloy and CoO existed on the used catalyst.