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https://doi.org/10.21256/zhaw-24179| Publikationstyp: | Beitrag in wissenschaftlicher Zeitschrift |
| Art der Begutachtung: | Peer review (Publikation) |
| Titel: | Branched versus linear structure : lowering the CO2 desorption temperature of polyethylenimine-functionalized silica adsorbents |
| Autor/-in: | Hack, Jannis Frazzetto, Seraina Evers, Leon Maeda, Nobutaka Meier, Daniel M. |
| et. al: | No |
| DOI: | 10.3390/en15031075 10.21256/zhaw-24179 |
| Erschienen in: | Energies |
| Band(Heft): | 15 |
| Heft: | 3 |
| Seite(n): | 1075 |
| Erscheinungsdatum: | 2022 |
| Verlag / Hrsg. Institution: | MDPI |
| ISSN: | 1996-1073 |
| Sprache: | Englisch |
| Schlagwörter: | CO2-capture; Regeneration temperature; Polyethylenimine |
| Fachgebiet (DDC): | 660: Technische Chemie |
| Zusammenfassung: | Lowering the regeneration temperature for solid CO2‐capture materials is one of the critical tasks for economizing CO2‐capturing processes. Based on reported pKa values and nucleophilicity, we compared two different polyethylenimines (PEIs): branched PEI (BPEI) and linear PEI (LPEI). LPEI outperformed BPEI in terms of adsorption and desorption properties. Because LPEI is a solid below 73–75 °C, even a high loading amount of LPEI can effectively adsorb CO2 without diffusive barriers. Temperature‐programmed desorption (TPD) demonstrated that the desorption peak top dropped to 50.8 °C for LPEI, compared to 78.0 °C for BPEI. We also revisited the classical adsorption model of CO2 on secondary amines by using in situ modulation excitation IR spectroscopy, and proposed a new adsorption configuration, R1(R2)‐NCOOH. Even though LPEI is more expensive than BPEI, considering the long‐term operation of a CO2‐capturing system, the low regeneration temperature makes LPEI attractive for industrial applications. |
| URI: | https://digitalcollection.zhaw.ch/handle/11475/24179 |
| Volltext Version: | Publizierte Version |
| Lizenz (gemäss Verlagsvertrag): | CC BY 4.0: Namensnennung 4.0 International |
| Departement: | School of Engineering |
| Organisationseinheit: | Institute of Materials and Process Engineering (IMPE) |
| Enthalten in den Sammlungen: | Publikationen School of Engineering |
Dateien zu dieser Ressource:
| Datei | Beschreibung | Größe | Format | |
|---|---|---|---|---|
| 2022_Hack-etal_Branched-vs-linear-structure-silica-adsorbents_Energies.pdf | 1.18 MB | Adobe PDF |  Öffnen/Anzeigen |
Zur Langanzeige
Hack, J., Frazzetto, S., Evers, L., Maeda, N., & Meier, D. M. (2022). Branched versus linear structure : lowering the CO2 desorption temperature of polyethylenimine-functionalized silica adsorbents. Energies, 15(3), 1075. https://doi.org/10.3390/en15031075
Hack, J. et al. (2022) ‘Branched versus linear structure : lowering the CO2 desorption temperature of polyethylenimine-functionalized silica adsorbents’, Energies, 15(3), p. 1075. Available at: https://doi.org/10.3390/en15031075.
J. Hack, S. Frazzetto, L. Evers, N. Maeda, and D. M. Meier, “Branched versus linear structure : lowering the CO2 desorption temperature of polyethylenimine-functionalized silica adsorbents,” Energies, vol. 15, no. 3, p. 1075, 2022, doi: 10.3390/en15031075.
HACK, Jannis, Seraina FRAZZETTO, Leon EVERS, Nobutaka MAEDA und Daniel M. MEIER, 2022. Branched versus linear structure : lowering the CO2 desorption temperature of polyethylenimine-functionalized silica adsorbents. Energies. 2022. Bd. 15, Nr. 3, S. 1075. DOI 10.3390/en15031075
Hack, Jannis, Seraina Frazzetto, Leon Evers, Nobutaka Maeda, and Daniel M. Meier. 2022. “Branched versus Linear Structure : Lowering the CO2 Desorption Temperature of Polyethylenimine-Functionalized Silica Adsorbents.” Energies 15 (3): 1075. https://doi.org/10.3390/en15031075.
Hack, Jannis, et al. “Branched versus Linear Structure : Lowering the CO2 Desorption Temperature of Polyethylenimine-Functionalized Silica Adsorbents.” Energies, vol. 15, no. 3, 2022, p. 1075, https://doi.org/10.3390/en15031075.
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