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The effect of the precursor composition of fused iron catalyst on the performance of Fischer-Tropsch synthesis was investigated. XRD, BET and CO2 adsorption experiments were carried out to provide better insight into the relationship therein. The results showed that the selectivity of C5+ hydrocarbon products was dependent on the mole ratio of Fe2+/Fe3+, which was represented by a hump-shaped curve. Catalysts with precursors containing Fe3O4 phase favored the magnetite spinal formation during F-T reaction, while Fe1-xO-based catalysts were more likely to favor the formation and growth of the iron carbide crystals.
The effect of the precursor composition of fused iron catalyst on the performance of Fischer-Tropsch synthesis was investigated. XRD, BET and CO2 adsorption experiments were carried out to provide better insights into the relationship therein. The results showed that the selectivity of C5 + hydrocarbon products was dependent on the mole ratio of Fe2 + / Fe3 +, which was represented by a hump-shaped curve. Catalysts with precursors containing Fe3O4 phase favored the magnetite spinal formation during FT reaction, while Fe1-xO-based catalysts were more likely to favor the formation and growth of the iron carbide crystals.