Highly Active and Durable Rh–Mo-Based Catalyst for the NO–CO–C₃H₆–O₂ Reaction Prepared by Using Hybrid Clustering

We developed a method for preparing catalysts by using hybrid clustering to form high density of metal/oxide interfacial active sites. A Rh–Mo catalyst was prepared cluster, [(RhCp*)4Mo4O16] (Cp* = η5-C5Me5), as the precursor. The activities toward NO–CO–C3H6–O2 reaction depended on mixing (hybrid > coimpregnation ≈ pristine Rh). also exhibited durability against thermal aging at 1273 K in air. activity and were attributed formation high-density Rh/MoOx NO reduction mechanism different from that typical Rh catalysts, where key step is N–O cleavage adsorbed NO. reducibility sites contributed partial oxidation C3H6 acetate species, which reacted with NO+O2 N2 via NCO species. reduced Rh4Mo4/Al2O3 not essential catalysts; this explained improvement durability.