Effect of the pore size of Co/SBA-15 isomorphically substituted with zirconium on its catalytic performance in Fischer-Tropsch synthesis
Effect of the pore size of Co/SBA-15 isomorphically substituted with zirconium on its catalytic performance in Fischer-Tropsch synthesis作者机构：Key Laboratory of Catalysis and Materials Science of the State Ethnic Affairs Commission & Ministry of Education South-central University for Nationalities Wuhan China Faculty of Industrial Science and Technology University Malaysia Pahang Gambang Malaysia
出 版 物：《Science China Chemistry》 (中国科学（化学英文版）)
年 卷 期：2010年第53卷第12期
页 面：2551-2559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] 0703[理学-化学]
基 金：supported by the National Natural Science Foundation of China(20590360 and 20773166)
主 题：Fischer-Tropsch synthesis cobalt catalyst SBA-15 pore size zirconium isomorphic substitution
摘 要：Cobalt catalysts supported on a series of mesoporous SBA-15 materials isomorphically substituted with zirconium (Zr/Si atomic ratio=1/20) with different pore sizes (5.7 nm,7.8 nm,11.6 nm,17.6 nm) have been *** catalysts were characterized by transmission electron microscopy,29 Si solid state magic angle spinning (MAS)NMR,N2 adsorption-desorption measurements,X-ray powder diffraction,X-ray photoelectron spectroscopy,H2-temperature programmed reduction,H2-temperature programmed desorption and O2 *** results indicated that larger pore size led to weaker interactions between cobalt and the supports which lowered the temperature of both reduction steps (Co3O4 → CoO and CoO→ Co0).The catalytic performances of the catalysts in Fischer-Tropsch synthesis (FTS) were tested in a fixed bed *** was found that the FTS catalytic activity and product selectivity depended strongly on the pore size of the *** catalyst with a pore size of 7.8 nm showed the best FTS activity,and the catalyst with a pore size of 17.6 nm showed the highest selectivity to C12-C20 and C20+ hydrocarbons.
维普期刊数据库
同方期刊数据库