| 초록 |
The Cobalt-based catalysts supported on hollow spherical mesoporous silica (Co/HSMS) were prepared for Fischer-Tropsch Synthesis(FTS) and characterized by N2-physisorption, TPR, TPD, XRD, SEM and TEM. The performance of these catalysts for FTS were tested in a fixed bed reactor under the conditions 240oC, 2.5MPa, H2/CO feed molar ratio of 2.0 for 100 h. The dependence of crysrallite size and reducibility of Co3O4 on the supports were investigated with FTS activity, CO and H2 conversion, liquid fuel selectivity and product distribution in a fixed bed reactor system. The Co/HSMS showed higher FTS activity than Co-based catalyst supported on commercial silica gel. It was found that the cobalt particles on Co/HSMS smaller than commercial silica supported one. Finally, there was almost no loose of cobalt metal on the hollow spherical silica supported catalyst during the FTS. |
