▎ 摘　　要

NOVELTY - Preparing a supported cobalt-based catalyst, comprises e.g. (1) mixing two soluble salts containing cobalt and two soluble salts of auxiliary agents with a solvent to prepare impregnating solution, impregnating the carrier at room temperature, allowing to stand the impregnated catalyst for 6-12 hours at room temperature, then drying for 6-48 hours, preferably 8-28 hours, the drying temperature is 303-393K, preferably 333-393K, and the drying atmosphere is nitrogen, argon and/or helium to prepare a semi-dry base catalyst precursor, where the soluble salt of cobalt is cobalt acetate, cobalt oxalate, cobalt phosphate, cobalt nitrate, cobalt chloride and/or cobalt citrate, preferably cobalt acetate, cobalt phosphate, cobalt nitrate and/or cobalt chloride, (2) roasting the semi-dry catalyst precursor of carbon dioxide, nitrogen, argon and/or helium to obtain dry base catalyst, and (3) reducing and activating the dry catalyst in a hydrogen-containing atmosphere. USE - The supported cobalt-based catalyst is useful in the hydrogenation reaction of carbon monoxide (claimed). ADVANTAGE - The catalyst: is economical and suitable for large scale preparation; ensure the high activity and selectivity. DETAILED DESCRIPTION - Preparing a supported cobalt-based catalyst, comprises (1) mixing two soluble salts containing cobalt and two soluble salts of auxiliary agents with a solvent to prepare impregnating solution, impregnating the carrier at room temperature, allowing to stand the impregnated catalyst for 6-12 hours at room temperature, then drying for 6-48 hours, preferably 8-28 hours, the drying temperature is 303-393K, preferably 333-393K, and the drying atmosphere is nitrogen, argon and/or helium to prepare a semi-dry base catalyst precursor, where the soluble salt of cobalt is cobalt acetate, cobalt oxalate, cobalt phosphate, cobalt nitrate, cobalt chloride and/or cobalt citrate, preferably cobalt acetate, cobalt phosphate, cobalt nitrate and/or cobalt chloride. The soluble salt of the auxiliary agent is formate, acetate, nitrate, chloride, sulfate and/or citrate of metal, preferably acetate, nitrate and/or chloride. The solvent comprises water, methanol, ethanol, glycol and/or glycerol, preferably water, ethanol and/or glycol. The carrier is active carbon, carbon nano tube, carbon nano fiber, carbon black and/or graphene, preferably active carbon, carbon nano tube and/or carbon nano fiber, (2) roasting the semi-dry catalyst precursor of carbon dioxide, nitrogen, argon and/or helium at the temperature of 373-773K (preferably 473-723K), the pressure of 0.1-1.0 µPa (preferably 0.1-0.5 µPa), the gas space velocity of 100-3000 h-1(preferably 500-2000h-1), the calcination time is 5-30 hours (preferably 6-15 hours) to obtain dry base catalyst, and (3) reducing and activating the dry catalyst in a hydrogen-containing atmosphere, where the hydrogen-containing atmosphere is pure hydrogen or mixed gas of hydrogen and protective gas, the volume content of the hydrogen is 10-100 vol.%, the protective gas is carbon dioxide, nitrogen, argon and/or helium, the reduction temperature is 473-873K (preferably 473-723K), the pressure is 0.1-3.0 µPa (preferably 0.2-1.0 µPa), and the gas airspeed is 500-10000 h-1(preferably 1000-5000 h-1), where the reduction and activation carried out for 1-100 hours (preferably 8-72 hours), where the active component of catalyst is metallic cobalt, cobalt carbide, cobalt phosphide and/or cobalt oxide. The auxiliary agent is ruthenium, rhenium, gold, chromium or zinc. The content of the metal cobalt in the catalyst is 5-30 wt.%, preferably 8-25 wt.% of the mass of catalyst, and the content of the auxiliary agent is 0.01-10 wt.%, preferably 0.1-5 wt.% of the mass of catalyst. INDEPENDENT CLAIMS are also included for: a supported cobalt-based catalyst prepared by the above mentioned method; and a use method of supported cobalt-based catalyst, comprising using fixed bed reactor or slurry bed reactor to performing the carbon monoxide hydrogenation reaction, where the concrete reaction is carried out at the temperature of 453-573K (preferably 463-553K), the pressure is 0.1-8.0 µPa, preferably 0.5-6.0 µPa, the gas space velocity is 500-10000 h, preferably 800-6000 h, the molar ratio of hydrogen to cobalt in the feed gas (synthesis gas) is 0.5-5.0, preferably 1.0-3.0, and the reaction time is 1-100 hours, preferably 24-96 hours.-1-1