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Main Title: Ultramicroporous silicon nitride ceramics for CO2 capture
Author(s): Schitco, Cristina
Seifollahi Bazarjani, Mahdi
Riedel, Ralf
Gurlo, Aleksander
Type: Article
Language Code: en
Abstract: Carbon dioxide (CO2) capture is regarded as one of the biggest challenges of the 21st century; therefore, intense research effort has been dedicated in the area of developing new materials for efficient CO2 capture. Here, we report high CO2 capture capacity in the low region of applied CO2 pressures observed with ultramicroporous silicon nitride-based material. The latter is synthesized by a facile one-step NH3-assisted thermolysis of a polysilazane. Our newly developed material for CO2 capture has the following outstanding properties: (i) one of the highest CO2 capture capacities per surface area of micropores, with a CO2 uptake of 2.35 mmol g−1 at 273 K and 1 bar (ii) a low isosteric heat of adsorption (27.6 kJ mol−1), which is independent from the fractional surface coverage of CO2. Furthermore, we demonstrate that the pore size plays a crucial role in elevating the CO2 adsorption capacity, surpassing the effect of Brunauer–Emmett–Teller specific surface area.
Issue Date: 2015
Date Available: 27-Nov-2017
DDC Class: 670 Industrielle Fertigung
Sponsor/Funder: EC/FP7/264873/EU/FUnctional Nitrides for Energy Applications/FUNEA
Journal Title: Journal of Materials Research
Publisher: Cambridge University Press
Publisher Place: Cambridge
Volume: 30
Issue: 19
Publisher DOI: 10.1557/jmr.2015.165
Page Start: 2958
Page End: 2966
EISSN: 2044-5326
ISSN: 0884-2914
Notes: Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
This publication is with permission of the rights owner freely accessible due to an Alliance licence and a national licence (funded by the DFG, German Research Foundation) respectively.
Appears in Collections:FG Keramische Werkstoffe » Publications

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