▎ 摘　　要

NOVELTY - Graphene-based carbon dioxide capture agent comprises 20-23.5 wt.% silicon carbide (SiC), 0.1-0.3 wt.% copper oxide (CuO), 20-30 wt.% carbon dioxide (CO2), 20-34 wt.% iron hydroxide (Fe(OH)2), 1.03-0.14 wt.% manganese (Mn), 0.03-0.04 wt.% zinc (Zn), 0.003-0.004 wt.% silver (Ag), 100-150 ppm Wu, ammonia (NH3) and processed CO2. USE - A graphene-based carbon dioxide capture agent. ADVANTAGE - The graphene-based carbon dioxide capture agent can satisfy greenhouse gas requirement. It can be used multiple times without by-products, which can well meet the needs of domestic and foreign markets. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparing a graphene-based carbon dioxide capture agent which involves: (a) charging newly-configured 200m1 ammonia solution into a reaction volume of 600 ml, placing the reactor in a constant temperature water bath and heating at 40 degrees C, dissolving silver ion salt in an organic solvent of ethanol to obtain an ammonia ion salt solution, adding distilled water to the reaction to obtain carbon dioxide that can react with carbon dioxide solution, taking the clear liquid, and finally preparing a homogeneous and stable absorption solution; (b) dissolving 2.0 mol graphene powder in 2.0 L tetrahydrofuran to prepare a solution at 0.5 mol/L, and mixing the graphene powder and tetrahydrofuran solution and dropping into a 50 L glass reactor containing anhydrous ether, removing the organic carrier solution, and adding 200 ml to the beaker, maintaining slow stirring, and measuring 2 g sodium bisulfite and 0.3 g methyl group were measured in sequence, adding silicone oil to the carrier solution, stirring the reaction at 25 degrees C for 12 hours, and keep stirring, when the amine solution absorbs to half saturation, stopping the absorption reaction and obtaining a precipitate to prepare the capture agent; and (c) placing treated carbon dioxide capture agent in a reactor equipped with the treated solution and placing in a thermostatic water bath for heating at 80 degrees C, and maintaining liquid phase stirring speed at 1400 revolutions per minute (r/min); introducing 0.2 L/min CO2 and 0.8 L/min nitrogen gas; when the exhaust gas concentration is less than or equal to 2 kPa of the simulated flue gas concentration (20%), stopping the desorption process to obtain refined solid products.