Flexible porous coordination polymer for capturing CO2 in multi-component gas and preparation method of flexible porous coordination polymer

The invention provides a flexible porous coordination polymer for capturing CO2 in multi-component gas and a preparation method of the flexible porous coordination polymer, and belongs to the field of novel materials for capturing industrial CO2. The flexible porous coordination polymer [Co (atpa) (pna)] n is prepared by adding Co (NO3) 2.6 H2O, an organic ligand N-(pyridine-4-yl) isonicotinamide and an organic ligand aminoterephthalic acid into an organic solution through a low-temperature solvothermal synthesis method. The flexible porous coordination polymer has unique one-dimensional corrugated pore channels, the pore channel structure and size of the flexible porous coordination polymer are easy for CO2 gas diffusion to limit C2H2, CH4 and N2 gas diffusion, and the flexible porous coordination polymer shows high adsorption capacity and adsorption selectivity on CO2 and can be used for high-selectivity capture of CO2 from CO2, C2H2, CH4, N2 and other multi-component gases at normal temperature and normal