| 초록 |
In iron-based Fischer-Tropsch synthesis (FTS), various iron carbides are known to be the active phases. Among them, ε-Fe2C has high stability and low CO2 selectivity in FTS. For preparation of ε-Fe2C, at least 12 h of reduction to α-Fe with H2 is necessary. In this study, activated carbon (AC) was used as support of the catalyst as well as sacrificial reductant. This makes synthesis of carbon supported pure α-Fe metal phase facile. Pretreatment of the pure α-Fe metal phase with syngas at 250 oC can lead to the formation of ε-Fe2C. The ε-Fe2C phase was identified by XRD and TEM analyses. After the pretreatment step, FTS activity test was conducted with the catalyst. Fresh and spent catalysts were also analyzed by XRD, TEM, SAED methods. |
