Atomically dispersed Pt1Ir1 pair for synergetic hydrogenation of levulinic acid to γ-valerolactone

Atomically dispersed metal catalysts have attracted numerous attentions in various important reaction due to the high atom utilization and specific coordination environment. However, the monometallic single sites sometimes presented undesirable catalytic performance, which usually need the synergistic effect with the neighboring metal atoms, such as dimers or trimers. Different metal pairs on various solid carrier have been reported, nonetheless, huge challenges remain to precisely prepare metal pair-site. Here, we presented a versatile strategy to synthesized atomically Pt1Ir1 pair via the strong metal-sulfur interaction over the porous sulfur-doped carbons. The Pt1Ir1 pair sites presented high activity and stability for hydrogenation of levulinic acid to γ-valerolactone.