| abstract |
Fe-based micro-ball catalyst for slurry bed FischerTropsch synthesis comprises active component Fe, transition metal promoter M, structural promoter S and promoter K. Transition metal promoter M is one or more selected from Mn, Cr and Zn, and structural promoter S is SiO2 and/or Al2O3. The weight ratio of the catalyst components is Fe: transition metal promoter: structural promoter: K = 100: 1-50: 1-50: 0.5-10. Preparation method of the catalyst comprises: adding structural promoter S to the mixed Fe/M nitrate solution, then co-precipitating with ammonia water to produce slurry, filtering and washing the slurry to produce filter cake, adding promoter K and water to the filter cake, slurrying and spray drying, and calcining to produce Fe-based micro-ball catalyst for slurry bed FischerTropsch synthesis. The catalyst has good anti-wear characteristic and narrow particle size distribution, furthermore, it brings high conversion capability of synthesis gas, good product selectivity and high space time yield, and the catalyst also can be used for slurry bed FischerTropsch synthesis in wide temperature range. |