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Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization

Louise B. Hamdy, Russell J. Wakeham, Marco Taddei Orcid Logo, Andrew Barron Orcid Logo, Enrico Andreoli Orcid Logo

Chemistry of Materials

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

Abstract

Optimizing sorption capacity and amine efficiency are among the major challenges in developing solid carbon dioxide sorbents. Such materials frequently feature polyamines impregnated onto supports adding weight to the sorbents. This work presents the cross-linking of polyethyleneimine (PEI) by the i...

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Published in: Chemistry of Materials
ISSN: 0897-4756 1520-5002
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa50645
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spelling 2019-08-27T13:19:43.0733060 v2 50645 2019-06-05 Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization 5cffd1038508554d8596dee8b4e51052 0000-0003-2805-6375 Marco Taddei Marco Taddei true false 92e452f20936d688d36f91c78574241d 0000-0002-2018-8288 Andrew Barron Andrew Barron true false cbd843daab780bb55698a3daccd74df8 0000-0002-1207-2314 Enrico Andreoli Enrico Andreoli true false 2019-06-05 EEN Optimizing sorption capacity and amine efficiency are among the major challenges in developing solid carbon dioxide sorbents. Such materials frequently feature polyamines impregnated onto supports adding weight to the sorbents. This work presents the cross-linking of polyethyleneimine (PEI) by the industrially available epoxy resin, bisphenol-A diglycidyl ether (DER) to form support-free sorbent materials. Prior to cross-linking, the polyamine chain is functionalized with hydrophobic additives; one material modified with the branched chain hydrocarbon 2-ethylhexyl glycidyl ether displays CO2 uptake of 0.195 g/g, 4.43 mmol CO2/g (1 atm single component CO2, 90 °C). The additive loading affects the cross-linking, with the lesser cross-linked materials showing more favorable sorption capacities and higher amine efficiencies. The type of additive also influences sorption, with the larger, longer and bulkier additives better able to free the amine from their hydrogen bonding network, generally promoting better sorption. As well as increasing CO2 uptake, the additives also reduce the optimum sorption temperature, offering a handle to tune sorbents for specific working conditions. The best performing material shows high selectivity for CO2 sorption, and under sorption cycles in a 10% CO2/90% N2 mixture, utilizing temperature swing desorption, demonstrates a good working capacity of 9.5% CO2 uptake over the course of 29 cycles. Furthermore, humidity has been found to promote CO2 sorption at lower temperatures with a CO2 uptake of 0.235 g/g, 5.34 mmol/g (1 atm single component CO2, 25 °C) using a pre-hydrated sample. Overall, these findings confirm the value of our approach where cross-linking emerges as a valid and practical alternative to loading polyamines onto solid supports. This work demonstrates the versatility of these types of materials and their potential for use in large scale carbon capture systems. Journal Article Chemistry of Materials 0897-4756 1520-5002 31 12 2019 2019-12-31 10.1021/acs.chemmater.9b00574 COLLEGE NANME Engineering COLLEGE CODE EEN Swansea University 2019-08-27T13:19:43.0733060 2019-06-05T13:59:30.5020181 Faculty of Science and Engineering School of Engineering and Applied Sciences - Chemical Engineering Louise B. Hamdy 1 Russell J. Wakeham 2 Marco Taddei 0000-0003-2805-6375 3 Andrew Barron 0000-0002-2018-8288 4 Enrico Andreoli 0000-0002-1207-2314 5 0050645-05062019140103.pdf hamdy2019.pdf 2019-06-05T14:01:03.8670000 Output 1207770 application/pdf Accepted Manuscript true 2020-06-04T00:00:00.0000000 true eng
title Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
spellingShingle Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
Marco Taddei
Andrew Barron
Enrico Andreoli
title_short Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
title_full Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
title_fullStr Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
title_full_unstemmed Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
title_sort Epoxy-cross-linked Polyamine CO2 Sorbents Enhanced via Hydrophobic Functionalization
author_id_str_mv 5cffd1038508554d8596dee8b4e51052
92e452f20936d688d36f91c78574241d
cbd843daab780bb55698a3daccd74df8
author_id_fullname_str_mv 5cffd1038508554d8596dee8b4e51052_***_Marco Taddei
92e452f20936d688d36f91c78574241d_***_Andrew Barron
cbd843daab780bb55698a3daccd74df8_***_Enrico Andreoli
author Marco Taddei
Andrew Barron
Enrico Andreoli
author2 Louise B. Hamdy
Russell J. Wakeham
Marco Taddei
Andrew Barron
Enrico Andreoli
format Journal article
container_title Chemistry of Materials
publishDate 2019
institution Swansea University
issn 0897-4756
1520-5002
doi_str_mv 10.1021/acs.chemmater.9b00574
college_str Faculty of Science and Engineering
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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 1
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description Optimizing sorption capacity and amine efficiency are among the major challenges in developing solid carbon dioxide sorbents. Such materials frequently feature polyamines impregnated onto supports adding weight to the sorbents. This work presents the cross-linking of polyethyleneimine (PEI) by the industrially available epoxy resin, bisphenol-A diglycidyl ether (DER) to form support-free sorbent materials. Prior to cross-linking, the polyamine chain is functionalized with hydrophobic additives; one material modified with the branched chain hydrocarbon 2-ethylhexyl glycidyl ether displays CO2 uptake of 0.195 g/g, 4.43 mmol CO2/g (1 atm single component CO2, 90 °C). The additive loading affects the cross-linking, with the lesser cross-linked materials showing more favorable sorption capacities and higher amine efficiencies. The type of additive also influences sorption, with the larger, longer and bulkier additives better able to free the amine from their hydrogen bonding network, generally promoting better sorption. As well as increasing CO2 uptake, the additives also reduce the optimum sorption temperature, offering a handle to tune sorbents for specific working conditions. The best performing material shows high selectivity for CO2 sorption, and under sorption cycles in a 10% CO2/90% N2 mixture, utilizing temperature swing desorption, demonstrates a good working capacity of 9.5% CO2 uptake over the course of 29 cycles. Furthermore, humidity has been found to promote CO2 sorption at lower temperatures with a CO2 uptake of 0.235 g/g, 5.34 mmol/g (1 atm single component CO2, 25 °C) using a pre-hydrated sample. Overall, these findings confirm the value of our approach where cross-linking emerges as a valid and practical alternative to loading polyamines onto solid supports. This work demonstrates the versatility of these types of materials and their potential for use in large scale carbon capture systems.
published_date 2019-12-31T03:58:43Z
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