▎ 摘　　要

NOVELTY - Iron-based Fischer-Tropsch catalyst comprises 0.1-70 wt.% graphene, 0-5 wt.% auxiliary agent and 30-99.9 wt.% iron microspheres, where the iron microspheres is ferric oxide and/or ferric oxide, the surface structure is rough, and microsphere having diameter of 500-1000 nm is assembled from small particles having diameter of 20-50 nm. USE - The iron-based Fischer-Tropsch catalyst is useful for catalyzing the carbon monoxide hydrogenation reaction (claimed). ADVANTAGE - The catalyst reduces carbon dioxide selectivity in the product, and has higher activity and olefin selectivity. The method d is relatively simple, and has industrial application prospects. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) preparing iron microspheres, comprising dissolving iron precursor in ethylene glycol, adding sodium acetate, stirring evenly, transferring to hydrothermal kettle, hydrothermally reacting at 150-250 degrees C for 10-20 hours, completing hydrothermal reaction, washing and drying to obtain iron microspheres; and (2) preparing iron-based Fischer-Tropsch catalyst, comprising (1) preparing iron microspheres from the above method, (2) immersing the iron microspheres obtained in step (1) in the solution containing auxiliary agent precursor for 1-24 hours, drying at 80-120 degrees C for 5-30 hours, roasting at 200-400 degrees C in air, nitrogen, argon or helium for 1-20 hours, (3) dispersing the iron microspheres obtained in step (2) in water to obtain suspension, stirring for 0.5-10 hours, carrying out ultra-sonication for 0.5-5 hours, dispersing the graphene to obtain suspension in water, stirring for 0.5-10 hours, sonicating for 0.5-5 hours, and (4) mixing the suspension of the iron microspheres obtained in step (3) and suspension of graphene, stirring for 0.5-30 hours, sonicating for 0.5-5 hours, centrifuging the mixture, drying the solid at 60-120 degrees C for 5-30 hours.