EFFECTIVE CONVERSION OF CARBON-DIOXIDE TO GASOLINE

As one of the powerful contributions to reduce the CO2 accumulation in atmosphere, catalytic conversion of CO2 into gasoline was studied by one-pass operation using seriesly connected two-stage reactor. In the first reactor CO2 was converted to methanol on a catalyst of mixed metal oxides composed of Cu-Zn-Cr-Al-Oxides, which was prepared by an intrinsic uniform gelation method. The total reaction mixture come out from the first reactor was directly introduced to a seriesly connected second reactor, in which a protonated H-Fe-silicate crystalline catalyst having pentasil pore opening structure was packed. As this H-Fe-silicate catalyst did not accept any unfavorable reaction even coexistence of unconverted hydrogen, the methanol formed in the first reactor was successfully converted into gasoline with about 50% in selectivity. The other products were still light olefins, which are intermediate compounds for gasoline production, therefore, more additional gasoline synthesis will be expected by circulation of those olefins.