Carbon dioxide capture agents are a class of specialized substances capable of efficiently separating and capturing carbon dioxide from various emission sources, such as industrial exhaust gases and the atmosphere. Taking the carbon dioxide capture agent produced by Shandong Yuanlin Silicon Ceramic New Materials Company as an example, it is meticulously prepared using a pelletizing process and exhibits extremely high selectivity for carbon dioxide in multi-component gas mixtures. Compared to currently common carbon dioxide separation technologies, such as solvent absorption and membrane separation methods, this capture agent offers significant advantages: the process is simpler, greatly reducing operational complexity; energy consumption is significantly lower, effectively cutting operational costs; the regeneration process is straightforward and easy to perform, extending the equipment's service life; additionally, it is environmentally friendly, with minimal impact on the ecological environment.