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CO 2 capture performance and characterization of cellulose aerogels synthesized from old corrugated containers.
- Source :
-
Carbohydrate polymers [Carbohydr Polym] 2020 Jan 01; Vol. 227, pp. 115380. Date of Electronic Publication: 2019 Sep 25. - Publication Year :
- 2020
-
Abstract
- Old corrugated containers with low recyclability were used as raw materials to synthesize a series of aerogels with varying cellulose concentrations in NaOH/urea solution via a freeze-drying process. The resulting aerogels had a rich porous structure with specific surface areas in the range of 132.72-245.19 m <superscript>2</superscript> .g <superscript>-1</superscript> and mesopore volumes in the range of 0.73-1.53 cm <superscript>3</superscript> .g <superscript>-1</superscript> , and were tested for CO <subscript>2</subscript> sorption at ambient temperature and pressure, displaying excellent CO <subscript>2</subscript> adsorption capacities in the range of 1.96-11.78 mmol.g <superscript>-1</superscript> . Furthermore, the CO <subscript>2</subscript> /N <subscript>2</subscript> selectivity of aerogels decreased with decreasing specific surface area, which was mainly caused by the decrease in CO <subscript>2</subscript> capture. In addition, the CO <subscript>2</subscript> sorption capacity of the sample with 2% cellulose content, CA-2, exceeded the values reported so far for many other sorbents with higher specific surface areas, and showed reasonable cyclic stability for CO <subscript>2</subscript> capture. Therefore, this adsorbent represents an attractive prospect for CO <subscript>2</subscript> uptake at room temperature.<br /> (Copyright © 2019 Elsevier Ltd. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1879-1344
- Volume :
- 227
- Database :
- MEDLINE
- Journal :
- Carbohydrate polymers
- Publication Type :
- Academic Journal
- Accession number :
- 31590848
- Full Text :
- https://doi.org/10.1016/j.carbpol.2019.115380