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Chitosan-based aerogels as reversible CO2 adsorbents

Niemeyer, Philipp David und Ganesan, Kathirvel und Milow, Barbara und Ratke, Lorenz (2017) Chitosan-based aerogels as reversible CO2 adsorbents. 5th International Conference on Multifunctional, Hybrid and Nanomaterials, 2016-03-06 - 2016-03-10, Lissabon, Portugal.

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Kurzfassung

Polysaccharide aerogels exhibit outstanding properties for many applications including gas filters. Due to relatively high surface areas, mesoporosity and the presence of amine groups, chitosan-based aerogels can be used as potential CO2 adsorbents in environmental control systems (ECS). For this application, the chitosan backbone was chemically modified by grafting different molecules onto the amine groups which was carried out either in the gel state or in the gas phase. Within this presentation we will report on chitosan-based gel bead production by the JetCutter, a mechanical cutting machine with high throughput. The sizes of beads were varied between 0.5 and 2 mm in order to produce filter material. Sodium hydroxide solution was used as regeneration bath. After several washings with water and ethanol, supercritical CO2 drying was applied for aerogel production. The CO2 adsorption capacity was characterized at low CO2 partial pressures by dynamic breakthrough measurements using CO2/N2 mixtures. Desorption of CO2 from chitosan aerogel beads was investigated under nitrogen gas flow at moderate temperatures. The moisture adsorption capacity was measured using humidified nitrogen gas flow. Nitrogen sorption measurements were performed for the evaluation of specific surface area and pore size distribution. Scanning electron microscopy images showed an interconnected nanofibrillar structure of the aerogel beads. FTIR measurements confirmed the successful chemical modification of the chitosan backbone. Chitosan-based aerogel materials can be potential candidates for CO2 filters in ECS as the chemical modification can enhance the CO2 adsorption and the regeneration can be achieved at reasonable temperatures. Acknowledgements: This project has received funding from the European Union´s Horizon 2020 research and innovation program under grant agreement No 685648

elib-URL des Eintrags:https://elib.dlr.de/111550/
Dokumentart:Konferenzbeitrag (Poster)
Titel:Chitosan-based aerogels as reversible CO2 adsorbents
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Niemeyer, Philipp DavidPhilipp.Niemeyer (at) dlr.dehttps://orcid.org/0000-0002-4386-2589NICHT SPEZIFIZIERT
Ganesan, Kathirvelk.ganesan (at) dlr.deNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Milow, Barbarabarbara.milow (at) dlr.dehttps://orcid.org/0000-0002-6350-7728NICHT SPEZIFIZIERT
Ratke, Lorenzlorenz.ratke (at) dlr.dehttps://orcid.org/0000-0003-2487-4717NICHT SPEZIFIZIERT
Datum:März 2017
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Nein
In ISI Web of Science:Nein
Status:veröffentlicht
Stichwörter:Chitosan Aerogel CO2 Adsorption Reversible
Veranstaltungstitel:5th International Conference on Multifunctional, Hybrid and Nanomaterials
Veranstaltungsort:Lissabon, Portugal
Veranstaltungsart:internationale Konferenz
Veranstaltungsbeginn:6 März 2016
Veranstaltungsende:10 März 2016
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Verkehr
HGF - Programmthema:Bodengebundener Verkehr (alt)
DLR - Schwerpunkt:Verkehr
DLR - Forschungsgebiet:V BF - Bodengebundene Fahrzeuge
DLR - Teilgebiet (Projekt, Vorhaben):V - NGC Fahrzeugstruktur (alt)
Standort: Köln-Porz
Institute & Einrichtungen:Institut für Werkstoff-Forschung > Aerogele
Hinterlegt von: Niemeyer, Philipp David
Hinterlegt am:18 Aug 2017 13:00
Letzte Änderung:24 Apr 2024 20:16

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