Highly Stable Amine-modified Mesoporous Silica Materials for Efficient CO2 Capture

A highly efficient and stable solid adsorbent invoking a direct incorporation of tetraethylenepentamine (TEPA) onto the as-synthesized mesocelullar silica foam (MSF) has been developed for CO 2 capture. Unlike most amine-functionalized silicas, which typically exhibit CO 2 adsorption capacities less...

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Bibliographic Details
Published in:Topics in catalysis 2010-03, Vol.53 (3-4), p.210-217
Main Authors: Liu, Shou-Heng, Wu, Chia-Hua, Lee, Huang-Kuei, Liu, Shang-Bin
Format: Article
Language:English
Subjects:
Catalysis
Characterization and Evaluation of Materials
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
Original Paper
Pharmacy
Physical Chemistry
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Summary:A highly efficient and stable solid adsorbent invoking a direct incorporation of tetraethylenepentamine (TEPA) onto the as-synthesized mesocelullar silica foam (MSF) has been developed for CO 2 capture. Unlike most amine-functionalized silicas, which typically exhibit CO 2 adsorption capacities less than 2.0 mmol/g, such organic template occluded mesoporous silica-amine composites exhibited remarkably high CO 2 uptake as high as 4.5 mmol/g at 348 K and 1 atm. Moreover, notable increases in CO 2 adsorption capacities of the composite materials were observed when in the presence of humidity. Durability test performed by cyclic adsorption–desorption revealed that such adsorbents also possess excellent stability, even though a slight decrease in adsorption capacity over time was observed.
ISSN:1022-5528
1572-9028
DOI:10.1007/s11244-009-9413-z