Patent ID: 8642500

Claim:
A method for manufacturing an iron catalyst, the method comprising: a mixing stage where a mixture solution is manufactured by mixing iron nitrate (Fe(NO 3 ) 3 ) solution and copper nitrate (Cu(NO 3 ) 2 ) solution; a precipitation slurry-forming stage where a precipitation slurry is formed by adding at least one of sodium carbonate (Na 2 CO 3 ) or sodium hydroxide (NaOH) solutions to the mixture solution; a washing stage where the precipitation slurry is filtered and washed with distilled water; a silica adding stage where fumed silica powder and potassium carbonate (K 2 CO 3 ) solution are added to the precipitation slurry and then agitated, wherein the fumed silica powder comprises particles having an average size of 5 nm to 20 nm; a drying stage where the precipitation slurry is passed through a sieve having a size of 30 μm to 100 μm and dried by a spry drying method to manufacture a powdered iron catalyst; and a heat treatment stage where the iron catalyst is dried at a temperature of 50° C. to 150° C., and then heat-treated at a temperature of 300° C. to 500° C.