ON THE DEACTIVATION OF AU_(38) CLUSTER-DERIVED AU/TIO2 CATALYST DURING CO OXIDATION

摘要

Gold was believed to be catalytically inactive until Haruta and co-workers reported that nanosized gold supported on titania is active for CO oxidation at temperatures below 0 °C. Since then, research on supported gold catalysts for CO oxidation has examined metal-support interactions, effects of metal particle size, pretreatment, metal loading, and catalyst preparation methods. The factors which affect the catalytic activity of gold are a) size of the gold nanoparticles, b) preparation method, c) pretreatment, d) amount of gold loading, e) oxidation state of gold, and f) binding strength with the support.