Catalytic Synthesis of Formamides by Integrating CO<sub>2</sub> Capture and Morpholine Formylation on Supported Iridium Catalyst
Danyang Cheng, Meng Wang, Lipeng Tang, Zirui Gao, Xuetao Qin, Gao Y, Dequan Xiao, Wu Zhou, Ding Ma
Abstract
Abstract Herein we report an efficient and recyclable catalytic system for tandem CO 2 capture and N‐formylation to value‐added chemicals. CO 2 is apt to be captured by morpholine solution, while a highly efficient heterogeneous catalyst, isolated iridium atoms supported over nanadiamond/graphene, is discovered to be highly reactive for the formylation of morpholine, leading to the formation of N‐formylmorpholine with excellent productivity (with a turnover number of 5 120 000 in a single batch reaction) and selectivity (>99 %). In addition, the CO 2 captured by morpholine under atmospheric conditions can be converted to N‐formylmorpholine with decent conversion (51 %), which realizes the integration of CO 2 capture and conversion to value‐added chemicals.