A method for producing hydrocarbons, comprising: (I) subjecting to a reduction
treatment a catalyst comprising a carrier having provided thereon: 0.1 to 10% by
mass of at least one metal selected from an alkali metal, an alkaline earth metal,
a rare earth metal and the Group III in the periodic table and 1 to 30% by mass
of ruthenium, each based on the catalyst weight, the carrier comprising an aluminum
oxide and a manganese oxide having an average number of charges of manganese of
exceeding Mn2+, and the catalyst having a specific surface area of from
60 to 350 m2/g and a bulk density of from 0.8 to 1.8 g/ml; (II) dispersing
the catalyst in liquid hydrocarbons in a concentration of from 1 to 50 w/v %; and
(III) bringing the catalyst into contact with a gas mixture comprising hydrogen
and carbon monoxide at a pressure of from 1 to 10 MPa, and (i) at a reaction temperature
of from 170 to 300 C. under such conditions that carbon dioxide is substantially
absent, or (ii) at a reaction temperature of from 200 to 350 C. under such
conditions that carbon dioxide coexists in an amount of from 0.5 to 50% based on
the total pressure of the hydrogen and the carbon monoxide.
