Efficient CO 2 Hydrogenation to Formate with a Continuous‐Flow System under Mild Conditions Catalyzed by Ir‐Based Porous Organic Polymer

Developing a continuous‐flow carbon dioxide hydrogenation system under mild conditions is an essential approach to improve production efficiency and safety. Herein, a series of efficient Ir‐based porous organic polymers (KAPs‐Ir) are reported for the continuous‐flow CO 2 hydrogenation to formate. Under mild conditions (80 °C and 0.4 MPa), the productivity of 10 403 mmol FA g Ir −1 h −1 is obtained using a KAPs‐Ir catalyst (KAPs‐1c Ir: 0.37 wt%), which is two times higher than the best result reported to date (obtained at 140 °C and 12 MPa). The catalytic reactivity is maintained well for at least 240 h, exhibiting excellent stability.