Ethanol synthesis from carbon dioxide and hydrogen

K/Cu-Zn-Fe oxides catalyst was found effective for ethanol synthesis by the catalytic hydrogenation of CO2. The catalyst gave an ethanol selectivity of 20C-% with a CO2 conversion of 44% at 7.0MPa, 300°C, GHSV 5,000, and H2/CO2 in the feed 3(mol). The ethanol STY of 290 g/L-cat· h was achieved at the GHSV of 20,000. The addition of Cr reduced the deactivation of the catalyst remarkably. The K/Cu-Zn-Fe-Cr oxides catalyst was revealed useful for practical purposes.