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Synthesis–Structure–Property Relationships for Hyperbranched Aminosilica CO2 Adsorbents
Abstract
Hyperbranched aminosilica (HAS) adsorbents are prepared via the ring‐opening polymerization of aziridine in the presence of mesoporous silica SBA‐15 support. The aminopolymers are covalently bound to the silica support and capture CO 2 reversibly in a temperature swing process. Here, a range of HAS materials are prepared with different organic loadings. The effects of organic loading on the structural properties and CO 2 adsorption properties of the resultant hybrid materials are examined. The residual porosity in the HAS adsorbents after organic loading, as well as the molecular weights and degrees of branching for the separated aminopolymers, are determined to draw a relationship between adsorbent structure and performance. Humid adsorption working capacities and apparent adsorption kinetics are determined from experiments in a packed‐bed flow system monitored by mass spectrometry. Dry adsorption isotherms are presented for one HAS adsorbent with a high amine loading at 35 and 75 °C. These combined results establish the relationships between adsorbent synthesis, structure, and CO 2 adsorption properties of the family of HAS materials.
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Millward, A. R., & Yaghi, O. M. (2005) · Journal of the American Chemical Society · doi:10.1021/ja0570032 · Cited by 2,876
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Metadata
- Authors
- Drese, J. H., Choi, S., Lively, R. P., Koros, W. J., Fauth, D. J., Gray, M. L., & Jones, C. W.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2009-12-03
- Volume
- 19
- Issue
- 23
- Pages
- 3821-3832
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W1565716364
- Cited by
- 287
- References
- 1
- FWCI
- 37.27
- Type
- journal article
- Language
- en
- Open access
- closed
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- Drese, J. H., Choi, S., Lively, R. P., Koros, W. J., Fauth, D. J., Gray, M. L., & Jones, C. W. (2009). Synthesis–Structure–Property Relationships for Hyperbranched Aminosilica CO2 Adsorbents. Advanced Functional Materials. https://doi.org/10.1002/adfm.200901461
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