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Open AccessArticle

Grafting of Amines on Ethanol-Extracted SBA-15 for CO2 Adsorption

by Yong Li 1,2, Nannan Sun 1, Lei Li 1, Ning Zhao 1, Fukui Xiao 1, Wei Wei 1,*, Yuhan Sun 1,3,* and Wei Huang 4,*
1
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China
2
Graduated University of Chinese Academy of Sciences, Beijing 100049, China
3
Low Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China
4
ShanXi Lu'an Mining Industry (group) Co., Ltd, Changzhi 064204, China
*
Authors to whom correspondence should be addressed.
Materials 2013, 6(3), 981-999; https://doi.org/10.3390/ma6030981
Received: 14 January 2013 / Revised: 19 February 2013 / Accepted: 25 February 2013 / Published: 12 March 2013
(This article belongs to the Special Issue Advances in Mesoporous Materials)
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. View Full-Text
Keywords: amine; grafting; ethanol extraction; SBA-15; CO2 adsorption 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.

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