Nitrogen-Doped Starbons®: Methodology Development and Carbon Dioxide Capture Capability.

Autor: Barker RE; Green Chemistry Centre of Excellence, Department of Chemistry, University of York, YO10 5DD, York, UK., Brand MC; Department of Chemistry and, Materials Innovation Factory and, Leverhulme Research Centre for Functional Materials Design, University of Liverpool, L69 7ZD, Liverpool, UK., Clark JH; Green Chemistry Centre of Excellence, Department of Chemistry, University of York, YO10 5DD, York, UK., North M; Green Chemistry Centre of Excellence, Department of Chemistry, University of York, YO10 5DD, York, UK.
Jazyk: angličtina
Zdroj: Chemistry (Weinheim an der Bergstrasse, Germany) [Chemistry] 2024 Jan 26; Vol. 30 (6), pp. e202303436. Date of Electronic Publication: 2023 Dec 07.
DOI: 10.1002/chem.202303436
Abstrakt: Five nitrogen sources (glycine, β-alanine, urea, melamine and nicotinamide) and three heating methods (thermal, monomodal microwave and multimodal microwave) are used to prepare nitrogen-doped Starbons® derived from starch. The materials are initially produced at 250-300 °C (SN x 300 y ), then heated in vacuo to 800 °C to produce nitrogen-doped SN x 800 y 's. Melamine gives the highest nitrogen incorporation without destroying the Starbon® pore structure and the microwave heating methods give higher nitrogen incorporations than thermal heating. The carbon dioxide adsorption capacities of the nitrogen-doped Starbons® determined gravimetrically, in many cases exceed those of S300 and S800. The carbon dioxide, nitrogen and methane adsorption isotherms of the most promising materials are measured volumetrically. Most of the nitrogen-doped materials show higher carbon dioxide adsorption capacities than S800, but lower methane and nitrogen adsorption capacities. As a result, the nitrogen-doped Starbons® exhibit significantly enhanced carbon dioxide versus nitrogen and methane versus nitrogen selectivities compared to S800.
(© 2023 The Authors. Chemistry - A European Journal published by Wiley-VCH GmbH.)
Databáze: MEDLINE
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