Highly Selective Carbon Dioxide Capture and Cooperative Catalysis of a Water‐Stable Acylamide‐Functionalized Metal–Organic Framework

摘要

> Incorporation of specific functionalities within the framework offers a significant opportunity to produce high‐performance gas storage/separation and catalysis MOF materials. In this work, multifunctionalities, including hydrophobic methoxy groups, polar acylamide functionalities, and open copper(II) sites, have been successfully integrated into a twofold interpenetrated microporous MOF (HNUST‐6, HNUST represents Hunan University of Science and Technology). HNUST‐6 possesses permanent porosity, with a moderate BET surface area of 1093 m 2 ?g –1 and high CO ₂ adsorption capacity (111 cm 3 ?g –1 at 1 bar), with good selectivity for CO ₂ over CH ₄ (6.6) and N ₂ (30.3) at 273 K. Remarkably, this MOF material exhibits excellent water stability and its framework structure is retained after being immersed in boiling water. In addition, HNUST‐6 demonstrates efficient catalytic activity as a cooperative catalyst in a tandem one‐pot deacetalization Knoevenagel condensation reaction.