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Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine

Enrico Andreoli Orcid Logo, Andrew Barron Orcid Logo

Journal of Materials Chemistry A, Volume: 3, Issue: 8, Pages: 4323 - 4329

Swansea University Authors: Enrico Andreoli Orcid Logo, Andrew Barron Orcid Logo

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DOI (Published version): 10.1039/C4TA06936F

Abstract

The high CO2 capacity of PEI-C60 conjugates is impeded by a slow rate of absorption. A limiting factor to this rate is proposed to be the surface area available for the rapid contact between amine functional groups of PEI and CO2. Increasing the surface area by spray-drying a solution of reagents is...

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Published in: Journal of Materials Chemistry A
ISSN: 2050-7488 2050-7496
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa21053
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first_indexed 2015-05-06T02:09:41Z
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spelling 2018-05-11T09:26:44.8558582 v2 21053 2015-05-05 Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine cbd843daab780bb55698a3daccd74df8 0000-0002-1207-2314 Enrico Andreoli Enrico Andreoli true false 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false 2015-05-05 CHEG The high CO2 capacity of PEI-C60 conjugates is impeded by a slow rate of absorption. A limiting factor to this rate is proposed to be the surface area available for the rapid contact between amine functional groups of PEI and CO2. Increasing the surface area by spray-drying a solution of reagents is proposed as a route to larger surface area products. In this work we investigate process changes to control absorption chemistry. Reagent solutions were spray-dried in different experimental conditions of concentration, drying temperature, and feed pressure. The results indicate that the rate of CO2 absorption at room temperature can be improved by a factor of 2.5 times by spray drying the product when compared to the product obtained using sonication. Given the rubbery nature of PEI-C60 the surface area, and hence CO2 capacity, could be increased using cryogenic grinding in liquid nitrogen; however, the results show that this has limited effect on the surface area of the absorbent prepared using sonication. Only compared to the hard chunks obtained via stir bar synthesis was the surface area doubled, in contrast to the rubbery product obtained using ultrasonication the area did not change significantly. Interestingly, doubling the surface area, the rate of absorption of wet CO2 at high temperature did not change, while that at low temperature doubled in rate, consistent with the presence of diffusion limitations manly at low temperature. Journal Article Journal of Materials Chemistry A 3 8 4323 4329 2050-7488 2050-7496 14 1 2015 2015-01-14 10.1039/C4TA06936F COLLEGE NANME Chemical Engineering COLLEGE CODE CHEG Swansea University 2018-05-11T09:26:44.8558582 2015-05-05T17:47:26.6651192 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Enrico Andreoli 0000-0002-1207-2314 1 Andrew Barron 0000-0002-2018-8288 2
title Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
spellingShingle Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
Enrico Andreoli
Andrew Barron
title_short Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
title_full Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
title_fullStr Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
title_full_unstemmed Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
title_sort Effect of spray-drying and cryo-milling on the CO2absorption performance of C60cross-linked polyethyleneimine
author_id_str_mv cbd843daab780bb55698a3daccd74df8
92e452f20936d688d36f91c78574241d
author_id_fullname_str_mv cbd843daab780bb55698a3daccd74df8_***_Enrico Andreoli
92e452f20936d688d36f91c78574241d_***_Andrew Barron
author Enrico Andreoli
Andrew Barron
author2 Enrico Andreoli
Andrew Barron
format Journal article
container_title Journal of Materials Chemistry A
container_volume 3
container_issue 8
container_start_page 4323
publishDate 2015
institution Swansea University
issn 2050-7488
2050-7496
doi_str_mv 10.1039/C4TA06936F
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Engineering and Applied Sciences - Chemical Engineering{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Engineering and Applied Sciences - Chemical Engineering
document_store_str 0
active_str 0
description The high CO2 capacity of PEI-C60 conjugates is impeded by a slow rate of absorption. A limiting factor to this rate is proposed to be the surface area available for the rapid contact between amine functional groups of PEI and CO2. Increasing the surface area by spray-drying a solution of reagents is proposed as a route to larger surface area products. In this work we investigate process changes to control absorption chemistry. Reagent solutions were spray-dried in different experimental conditions of concentration, drying temperature, and feed pressure. The results indicate that the rate of CO2 absorption at room temperature can be improved by a factor of 2.5 times by spray drying the product when compared to the product obtained using sonication. Given the rubbery nature of PEI-C60 the surface area, and hence CO2 capacity, could be increased using cryogenic grinding in liquid nitrogen; however, the results show that this has limited effect on the surface area of the absorbent prepared using sonication. Only compared to the hard chunks obtained via stir bar synthesis was the surface area doubled, in contrast to the rubbery product obtained using ultrasonication the area did not change significantly. Interestingly, doubling the surface area, the rate of absorption of wet CO2 at high temperature did not change, while that at low temperature doubled in rate, consistent with the presence of diffusion limitations manly at low temperature.
published_date 2015-01-14T03:24:56Z
_version_ 1763750861296631808
score 11.037056

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