多孔CO_2吸附剂研究进展

Research progress on CO_2 porous adsorbent

CO2吸附分为物理吸附和化学吸附。物理吸附主要发生在微孔内,常见的物理吸附剂包括活性炭、沸石、硅胶等。调整多孔材料的结构可以改变吸附性能。通过在多孔材料尤其是介孔材料孔表面接枝或浸渍胺类等碱性物质,将物理吸附转化为新化学吸附,是提高多孔吸附剂吸附性能的有效方法。综述了活性炭、沸石、硅胶和改性介孔材料等多种多孔CO2吸附剂的研究进展,指出了研究和改进的方向。

There are two types of CO2 adsorption physical adsorption and chemical adsorption. Physical adsorp- tion take places mainly in the micropores. Active carbon, zeolite and silica are all conventional physical adsorbents. Adjusting porous material structure can change the absorption capacity. One effective method to enhance the adsorption capacity is grafting or impregnating amine on the surface of porous material especially the meso- porous material ,which can alter the adsorption from physical to chemical. The research progress on CO2 porous adsorbent including active carbon, zeolite, silica and modified mesoporous material were summarized briefly, then the future improvement emphasis were pointed out.