TY - JOUR AV - public SP - 1781 ID - discovery10118612 N2 - Heterogeneous immobilized molecular catalysis has gained significant attention as a platform for creating more efficient and selective catalysts. A promising type of immobilized molecular catalysts are made from porous organic polymers (POPs) due to their high stability, porosity, and ability to mimic the catalytic activity and selectivity of homogeneous organometallic catalysts. These properties of the POP-based systems make them very attractive as heterogeneous catalysts for hydrogenation of CO2 to formate, where predominately homogeneous systems have been applied. In this study, five POPs were synthesized and assessed in the hydrogenation of CO2 where the active catalysts were made in-situ by mixing IrCl3 and the POPs. One of the Ir/POP catalysts provided a turn-over number (TON) >20,000, which is among the highest for POP-based systems. Thorough characterization (CO2- and N2-physisorption, TGA, CHN-analysis, XRD, XPS, SEM, STEM and TEM) was performed. Notably, the developed Ir/POP system also showed catalytic activity for the decomposition of formic acid into H2 enabling the use of formic acid as a renewable energy carrier. EP - 1786 UR - https://doi.org/10.1002/cctc.202100002 N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. Y1 - 2021/04/09/ A1 - Bennedsen, NR A1 - Christensen, DB A1 - Mortensen, RL A1 - Wang, B A1 - Wang, R A1 - Kramer, S A1 - Kegnæs, S JF - ChemCatChem TI - Heterogeneous formic acid production by hydrogenation of CO? catalyzed by Ir?bpy embedded in polyphenylene porous organic polymers PB - Wiley VL - 13 IS - 7 ER -