초록 |
Fischer-Tropsch Synthesis (FTS) reaction has been considered as an alternative way to replace the conventional production processes of petroleum-based chemicals and fuels. Iron-based FTS catalysts have been utilized for the selective production of heavy hydrocarbons and olefins, and Hägg carbide (χ-Fe5C2) was reported as one of the active phases for CO hydrogenation. To selectively synthesize the Hägg carbide phase, graphitic carbon nitride (g-C3N4) was added as a carbon source as well as reducing agent. The g-C3N4 enhanced the formation of Hägg carbide phase by lowering the oxidation state of iron oxides, which are responsible for a facile reduction to Hägg carbides. The melamine was used as a source of g-C3N4, and MOF such as MIL-100(Fe) and melamine were carburized simultaneously for the preparation of active iron-carbide phases. |