Novel functional carbon dioxide combined organic liquid composition and application thereof in carbon dioxide trapping

The invention belongs to the technical field of gas separation and purification, and particularly discloses a novel functional carbon dioxide combined organic liquid composition and application thereof in carbon dioxide trapping, and the novel functional carbon dioxide combined organic liquid composition comprises 1, 1, 3, 3-tetramethylguanidine, polyhydric alcohol compounds and amino derivatives thereof. 1, 1, 3, 3-tetramethylguanidine is used as a proton receptor to capture proton hydrogen in a polyol compound and an amino derivative thereof, so that the 1, 1, 3, 3-tetramethylguanidine carries negative electricity and performs nucleophilic attack on CO2 to generate alkyl guanidine carbonate, thereby achieving the purpose of rapidly and efficiently absorbing CO2. The method has the advantages of high absorption efficiency, large absorption capacity, low energy consumption, reversible absorption and the like, and has a relatively good application prospect for capturing carbon dioxide in the atmosphere. 本发明属于气