An Introductive Study about CO<sub>2</sub> Hydrogenation into Hydrocarbons Using Iron Catalysts

Abstract

CO 2 hydrogenation reaction was performed on precipitated iron catalysts which were promoted by Si, Zn, K and Cu. The optimum SiO 2 content in the catalysts is about 15 wt% relative to Fe 2 O 3 mass. With reaction temperature raised, CO 2 conversion is increased continually, but CO and CH 4 selectivity only fluctuate in a narrow range which is beneficial to the synthesis of C 2 + hydrocarbons. Two kinds of catalyst filling constitution were experimentally compared in order to increase the yield of C 5 + hydrocarbons.