Boosting the Performance of Iridium Single Atom Catalyst in a Porous Organic Polymer for Glycerol Conversion to Lactic Acid

Single‐atom catalysts (SACs) inherit the merit of both homogeneous and heterogeneous systems with atomically dispersed mononuclear metal centers on the solid supports. Herein, we developed an Ir‐SAC catalyst via the polymerization of an active homogeneous 2‐picolinylhydrazone ligand‐based iridium (Ir) metal complex. Such catalysts provide great stabilization against migration and agglomeration due to the strong covalent C‐C bond linkage of active complexes and the polymer matrix. This Ir‐SAC catalyst shows excellent selectivity towards glycerol to lactic acid conversion with a remarkable recyclability to offer an unprecedentedly high TON of over 104 million under optimized conditions.