Capture of carbon dioxide by amine-impregnated as-synthesized MCM-41
Jianwen Wei , Lei Liao , Yu Xiao , Pei Zhang , Yao Shi
DOI:
Received November 04, 2009,Revised February 14, 2010, Accepted , Available online
Volume 22,2010,Pages 1558-1563
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The novel carbon dioxide (CO2) adsorbents with a high capture e ciency were prepared through impregnating the as-synthesized
MCM-41 with three kinds of amines, namely diethylenetriamine (DETA), triethylenetetramine (TETA) and 2-amino-2-methyl-1-
propanol (AMP). The resultant samples were characterized by small angle X-ray di raction and low temperature N2 adsorption. The
synthesis way not only saves the energy or extractor to remove the template but also is environmentally friendly due to the absence of
the potential pollutants such as toluene. CO2 capture was investigated in a dynamic packed column. The sample impregnated by TETA
showed the highest adsorption capacity, approximately 2.22 mmol/g at 60°C due to its highest amino-groups content among the three
amines. The CO2 adsorption behavior was also investigated with the deactivation model, which showed an excellent prediction for the
breakthrough curves.
