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

• Published in: Angewandte Chemie International Edition Vol. 64; no. 7; pp. e202419607 - n/a
• Main Authors: Rachuri, Yadagiri, Gholap, Sandeep Suryabhan, Hengne, Amol M., Rahman, Mohammad Misbahur, Dutta, Indranil, Hassine, Mohamed Ben, Xi, Shibo, Huang, Kuo‐Wei
• Format: Journal Article
• Language: English
• Published: Germany Wiley Subscription Services, Inc 10.02.2025
• Edition: International ed. in English
• Subjects: Catalysts; Glycerol; Heterogeneous catalyst; Iridium; Iridium catalyst; Lactic acid; Polymers; Porous organic polymer; Recyclability; Single atom catalyst; Single atom catalysts; Glycerol; Porous organic polymer; Heterogeneous catalyst; Iridium catalyst; Single atom catalyst
• ISSN: 1433-7851; 1521-3773; 1521-3773
• DOI: 10.1002/anie.202419607

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. Single Atom Catalysts (SACs) are a promising frontier in heterogeneous catalysis, combining the advantages of both homogeneous and heterogeneous systems with high active metal site dispersion. A novel, stable Iridium (Ir) SAC catalyst synthesized by directly incorporating an active Ir complex within a porous organic polymer matrix exhibits exceptional efficiency and selectivity in converting glycerol to lactic acid.