Amide-Functionalized In-MOF for Effective Hydrocarbon Separation and CO2 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 (H2EtL), a new porous indium-organic framework (Me2NH2)(1.5)[In1.5L2]center dot 2DMF center dot 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 CO2, showing good separation behaviors for C-2 hydrocarbons/CO2 on CH4 and C2H2 on CO2, which is conducive to efficient purification of CH4 and C2H2 confirmed by the breakthrough experiment. Meanwhile, catalytic results indicate that 1 can be used as a good catalyst for effective fixation of CO2 under mild conditions to form cyclic carbonates.