| 초록 |
In an effort to develop effective adsorbents for CO2 capture, we prepared two different types of aminopropyl-functionalized mesoporous silica MCM-48 materials. Physicochemical information of the functionalized MCM-48 materials was obtained by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), N2 adsorption/desorption, thermal gravimetric analysis (TGA) as well as CO2 adsorption/desorption performance. The N2 adsorption-desorption analysis showed a considerable decrease of the pore volume and surface area for the aminopropyl-functionalized mesoporous silica MCM-48 samples. The CO2 adsorption properties of the aminopropyl-attached MCM-48 samples were studied using a gravimetric technique based on a microelectronic balance system. The results showed that these materials exhibited high CO2 adsorption capacities. The coating method was found to be a better method for the preparation of aminopropyl-functionalized MCM-48 adsorbents than grafting method. |
