Amide-Functionalized In-MOF for Effective Hydrocarbon Separation and CO 2 Catalytic Fixation.

Energy saving and emission reduction have always been the goal of separation and catalysis pursued in industrial production. Metal-organic frameworks (MOFs) are leading porous crystal materials with unique advantages in these fields. Based on an amide-modified ligand 5-(ethyl oxamate)-isophthalic acid (H 2 EtL), a new porous indium-organic framework (Me 2 NH 2 ) 1.5 [In 1.5 L 2 ]·2DMF·2H 2 O ( 1 ) was synthesized and structurally characterized. The unique porous environment gives it dual functional advantages in separation and catalysis. At room temperature, 1 possesses excellent adsorption capacities for C 2 hydrocarbons and CO 2 , showing good separation behaviors for C 2 hydrocarbons/CO 2 on CH 4 and C 2 H 2 on CO 2 , which is conducive to efficient purification of CH 4 and C 2 H 2 confirmed by the breakthrough experiment. Meanwhile, catalytic results indicate that 1 can be used as a good catalyst for effective fixation of CO 2 under mild conditions to form cyclic carbonates.