燃料化学学报2017，Vol.45Issue(8)：950-955,6.
多级孔ZSM-5负载的钴催化剂的费-托合成催化性能
Performance of hierarchical ZSM-5 supported cobalt catalyst in the Fischer-Tropsch synthesis
摘要
Abstract
Uniform ZSM-5 nanoparticles (around 180 nm) were synthesized by steam assisted crystallization method (SAC),which have a hierarchically porous structure,composed of abundant open mesopores from the stacking of ZSM-5 particles and micropores in the ZSM-5 crystallites.The hierarchical ZSM-5 supported cobalt catalyst,with a cobalt loading of 15％,was then prepared through incipient impregnation and used in FischerTropsch synthesis (FTS).The hierarchical ZSM-5 support and Co-based catalyst were characterized by X-ray diffraction (XRD),scanning electron microscopy (SEM),transmission electron microscopy (TEM) and N2 sorption.The results indicate that the hierarchical ZSM-5 supported cobalt catalyst performs excellently in FTS,since the mesoporous structure in the hierarchical ZSM-5 support can enhance the mass transfer of the reaction products and the acid sites on the microporous ZSM-5 framework can promote the hydrocracking of long chain hydrocarbon products.In comparison with the cobalt catalysts supported on bulk ZSM-5 and commercial ZSM-5,the hierarchical ZSM-5 supported cobalt catalyst exhibits much higher activity in FTS,lower selectivity to CH4,and higher selectivity to C5-20 hydrocarbons (68.9％).关键词
ZSM-5/水蒸气辅助转晶法/多级孔结构/钴催化剂/费-托合成Key words
ZSM-5/steam assisted crystallization/hierarchical structure/cobalt-based catalyst/Fischer-Tropsch synthesis分类
化学化工引用本文复制引用
文雄,张煜华,刘成超,洪景萍,韦良,陈耀,李金林..多级孔ZSM-5负载的钴催化剂的费-托合成催化性能[J].燃料化学学报,2017,45(8):950-955,6.基金项目
The project was supported by National Natural Science Foundation of China (21203253,21473259)国家自然科学基金(21203253,21473259)资助 （21203253,21473259）
