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Polyethylenimine-Impregnated Mesoporous Silica: Effect of Amine Loading and Surface Alkyl Chains on CO2 Adsorption
Abstract
Poly(ethyleneimine) (PEI) supported on pore-expanded MCM-41 whose surface is covered with a layer of long-alkyl chains was found to be a more efficient CO(2) adsorbent than PEI supported on the corresponding calcined silica and all PEI-impregnated materials reported in the literature. The layer of surface alkyl chains plays an important role in enhancing the dispersion of PEI, thus decreasing the diffusion resistance. It was also found that at low temperature, adsorbents with relatively low PEI contents are more efficient than their highly loaded counterparts because of the increased adsorption rate. Extensive CO(2) adsorption-desorption cycling showed that the use of humidified feed and purge gases affords materials with enhanced stability, despite limited loss due to amine evaporation.
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Cited by
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Sanz-Pérez, E. S., Murdock, C. R., Didas, S. A., & Jones, C. W. (2016) · Chemical Reviews · doi:10.1021/acs.chemrev.6b00173 · Cited by 2,406
Air as the renewable carbon source of the future: an overview of CO2 capture from the atmosphere
Goeppert, A., Czaun, M., Surya Prakash, G. K., & Olah, G. A. (2012) · Energy & Environmental Science · doi:10.1039/c2ee21586a · Cited by 724
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Shi, X., Xiao, H., Azarabadi, H., Song, J., Wu, X., Chen, X., & Lackner, K. S. (2020) · Angewandte Chemie International Edition · doi:10.1002/anie.201906756 · Cited by 679
Understanding the Effect of Water on CO2 Adsorption
Kolle, J. M., Fayaz, M., & Sayari, A. (2021) · Chemical Reviews · doi:10.1021/acs.chemrev.0c00762 · Cited by 523
Self-citationCarbon dioxide utilization with C–N bond formation: carbon dioxide capture and subsequent conversion
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Metadata
- Authors
- Heydari-Gorji, A., Belmabkhout, Y., & Sayari, A.
- Venue
- Langmuir
- Publisher
- American Chemical Society (ACS)
- Published
- 2011-09-21
- Volume
- 27
- Issue
- 20
- Pages
- 12411-12416
- ISSN
- 0743-7463 (ISSN-L)
- 1520-5827
- OpenAlex
- W2068536827
- Cited by
- 335
- References
- 0
- FWCI
- 44.96
- Type
- journal article
- Language
- en
- Open access
- closed
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- Heydari-Gorji, A., Belmabkhout, Y., & Sayari, A. (2011). Polyethylenimine-Impregnated Mesoporous Silica: Effect of Amine Loading and Surface Alkyl Chains on CO2 Adsorption. Langmuir. https://doi.org/10.1021/la202972t
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