Abstract: SBA-15 prepared via ethanol extraction for template removing was grafted with three kinds of amine precursors (mono-, di-, tri-aminosilanes) to synthesis new CO2 adsorbents. The SBA-15 support and the obtained adsorbents were characterized by X-ray diffraction (XRD), small-angle X-ray scattering (SAXS), N2 adsorption/desorption, thermogravimetry (TG), elemental analysis, Fourier transform infrared (FTIR) spectrometry, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). It was found that, except higher silanol density, the ethanol-extracted SBA-15 support possessed a more regular mesophase and thicker walls than traditionally calcined samples, leading to a good stability of the adsorbent under steam treatment. The adsorption capacity of different amine-grafted samples was found to be influenced by not only the surface amine density, but also their physiochemical properties. These observations provide important support for further studies of applying amine-grafted adsorbents in practical CO2 capture process.
Keywords: amine; grafting; ethanol extraction; SBA-15; CO2 adsorption
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Li, Y.; Sun, N.; Li, L.; Zhao, N.; Xiao, F.; Wei, W.; Sun, Y.; Huang, W. Grafting of Amines on Ethanol-Extracted SBA-15 for CO2 Adsorption. Materials 2013, 6, 981-999.
Li Y, Sun N, Li L, Zhao N, Xiao F, Wei W, Sun Y, Huang W. Grafting of Amines on Ethanol-Extracted SBA-15 for CO2 Adsorption. Materials. 2013; 6(3):981-999.
Li, Yong; Sun, Nannan; Li, Lei; Zhao, Ning; Xiao, Fukui; Wei, Wei; Sun, Yuhan; Huang, Wei. 2013. "Grafting of Amines on Ethanol-Extracted SBA-15 for CO2 Adsorption." Materials 6, no. 3: 981-999.