胺功能化介孔二氧化硅捕集CO2的研究进展

胺功能化介孔二氧化硅因其高选择性、高吸附容量、快速的吸附动力学、良好的再生性能和循环稳定性受到广泛关注，在二氧化碳捕集技术中具有优良的应用前景。本文比较了胺改性的M41S、SBA-n、KIT-n、介孔二氧化硅泡沫、介孔二氧化硅纳米球和六方介孔二氧化硅的吸附性能，总结了MCM-41和SBA-15的结构特点。介绍了胺化合物的负载方式——湿法浸渍、化学接枝和原位聚合的胺负载原理。分析了硅源、载体内部性质、气体选择性和不同添加剂对胺功能化介孔二氧化硅材料吸附二氧化碳能力的影响。最后，点明了吸附剂未来的发展目标，对胺功能化介孔二氧化硅材料的研究方向进行了展望。指出未来可关注介孔二氧化硅微观结构和温度对胺与二氧化碳相互作用的影响，增强胺功能化介孔二氧化硅的稳定性，推进其在实际环境下的应用。

Progress in amine-functionalized mesoporous silica for CO2 capture

As to its high selectivity, high adsorption capacity, fast adsorption kinetics, good regeneration performance and cycling stability, amine-functionalized mesoporous has received much attention and has excellent prospects for application in CO₂ capture technology. In this paper, the adsorption capacity of mesoporous silica M41S, SBA-n, FDU-n, KIT-n, MCF, MSN and HMS was compared, and the structural characteristics of MCM-41 and SBA-15 are summarized. The principles of physical impregnation, covalent tethering via silane linkage and direct covalent tethering via in-situ polymerization for amine loading are presented. The effects of differences in silica source, internal material properties, other gases and additives on the adsorption capacity are analyzed. In conclusion, the future development goals of adsorbents were clarified and an outlook on the research direction of amine-functionalized mesoporous silica materials is provided. It is noted that future attention can be paid to the effect of mesoporous silica microstructure and temperature on the interaction between amine and CO₂ to enhance the stability of amine-functionalized mesoporous silica to promote its application in practical environments.