Carbon Dioxide Hydrogenation on Au Nanoparticles Supported on TiO2, ZrO2 and Sulfated ZrO2 Under Supercritical Conditions

摘要

Hydrogenation of CO2 into CO and CH4 was studied for the first time on Au and Au-Ni catalysts supported on ZrO2, TiO2 and sulfated ZrO2 under supercritical conditions. The extremely high selectivity to CO exceeding 96-98 % was found with a quite good stability of the catalytic activity. Surprisingly, almost no methanation reaction was observed, this reaction being typical for nickel-based catalysts.