CO2 hydrogenation reaction was performed on precipitated iron catalysts which were\npromoted by Si, Zn, K and Cu. The optimum SiO2 content in the catalysts is about 15\nwt% relative to Fe2O3 mass. With reaction temperature raised, CO2 conversion is increased\ncontinually, but CO and CH4 selectivity only fluctuate in a narrow range\nwhich is beneficial to the synthesis of C2+ hydrocarbons. Two kinds of catalyst filling\nconstitution were experimentally compared in order to increase the yield of C5+ hydrocarbons.
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