Catalyst for synthesizing gas and liquid fuel, preparation method and application thereof

The invention relates to a catalyst which is used for synthesis gas and synthetic fluid fuel, a process for preparation and use. The catalyst is composed of three parts of active components, additives and carriers, wherein the active components are iron and cobalt, the metallic iron and the cobalt account for 5%-30% of the total weight of the catalyst, the additives are zirconium and potassium, potassium additive accounts for 0.01%-15% of the total weight of the catalyst, zirconium additive accounts for 1%-20% of the total weight of the catalyst, and the others are the carriers. Compared with the prior art, the catalyst of the invention has comparatively high hydrogenation activity to CO and comparatively high selectivity and receiving rate to C5+.