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Accelerated Oxidative Degradation of Phosphonium-Type Ionic Liquid with l-Prolinate Anion: Degradation Mechanism and CO(2) Separation Performance
[Image: see text] Amino acid ionic liquids (AAILs) are regarded as green alternatives to existing CO(2)-sorptive materials because amino acids are readily available from renewable sources in large quantities. For widespread applications of AAILs, including direct air capture, the relationship betwee...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2023
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10269244/ https://www.ncbi.nlm.nih.gov/pubmed/37332785 http://dx.doi.org/10.1021/acsomega.3c02116 |
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author | Sei, Hiroi Kanasaki, Yu Nagai Oka, Kouki Tohnai, Norimitsu Kohno, Yuki Makino, Takashi |
author_facet | Sei, Hiroi Kanasaki, Yu Nagai Oka, Kouki Tohnai, Norimitsu Kohno, Yuki Makino, Takashi |
author_sort | Sei, Hiroi |
collection | PubMed |
description | [Image: see text] Amino acid ionic liquids (AAILs) are regarded as green alternatives to existing CO(2)-sorptive materials because amino acids are readily available from renewable sources in large quantities. For widespread applications of AAILs, including direct air capture, the relationship between the stability of AAILs, especially toward O(2), and the CO(2) separation performance is of particular importance. In the present study, the accelerated oxidative degradation of tetra-n-butylphosphonium l-prolinate ([P(4444)][Pro]), a model AAIL that has been widely investigated as a CO(2)-chemsorptive IL, is performed using a flow-type reactor system. Upon heating at 120–150 °C and O(2) gas bubbling to [P(4444)][Pro], both the cationic and anionic parts undergo oxidative degradation. The kinetic evaluation of the oxidative degradation of [P(4444)][Pro] is performed by tracing the decrease in the [Pro](−) concentration. Supported IL membranes composed of degraded [P(4444)][Pro] are fabricated, and the membranes retain CO(2) permeability and CO(2)/N(2) selectivity values in spite of the partial degradation of [P(4444)][Pro]. |
format | Online Article Text |
id | pubmed-10269244 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-102692442023-06-16 Accelerated Oxidative Degradation of Phosphonium-Type Ionic Liquid with l-Prolinate Anion: Degradation Mechanism and CO(2) Separation Performance Sei, Hiroi Kanasaki, Yu Nagai Oka, Kouki Tohnai, Norimitsu Kohno, Yuki Makino, Takashi ACS Omega [Image: see text] Amino acid ionic liquids (AAILs) are regarded as green alternatives to existing CO(2)-sorptive materials because amino acids are readily available from renewable sources in large quantities. For widespread applications of AAILs, including direct air capture, the relationship between the stability of AAILs, especially toward O(2), and the CO(2) separation performance is of particular importance. In the present study, the accelerated oxidative degradation of tetra-n-butylphosphonium l-prolinate ([P(4444)][Pro]), a model AAIL that has been widely investigated as a CO(2)-chemsorptive IL, is performed using a flow-type reactor system. Upon heating at 120–150 °C and O(2) gas bubbling to [P(4444)][Pro], both the cationic and anionic parts undergo oxidative degradation. The kinetic evaluation of the oxidative degradation of [P(4444)][Pro] is performed by tracing the decrease in the [Pro](−) concentration. Supported IL membranes composed of degraded [P(4444)][Pro] are fabricated, and the membranes retain CO(2) permeability and CO(2)/N(2) selectivity values in spite of the partial degradation of [P(4444)][Pro]. American Chemical Society 2023-05-31 /pmc/articles/PMC10269244/ /pubmed/37332785 http://dx.doi.org/10.1021/acsomega.3c02116 Text en © 2023 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Sei, Hiroi Kanasaki, Yu Nagai Oka, Kouki Tohnai, Norimitsu Kohno, Yuki Makino, Takashi Accelerated Oxidative Degradation of Phosphonium-Type Ionic Liquid with l-Prolinate Anion: Degradation Mechanism and CO(2) Separation Performance |
title | Accelerated Oxidative
Degradation of Phosphonium-Type
Ionic Liquid with l-Prolinate Anion: Degradation
Mechanism and CO(2) Separation Performance |
title_full | Accelerated Oxidative
Degradation of Phosphonium-Type
Ionic Liquid with l-Prolinate Anion: Degradation
Mechanism and CO(2) Separation Performance |
title_fullStr | Accelerated Oxidative
Degradation of Phosphonium-Type
Ionic Liquid with l-Prolinate Anion: Degradation
Mechanism and CO(2) Separation Performance |
title_full_unstemmed | Accelerated Oxidative
Degradation of Phosphonium-Type
Ionic Liquid with l-Prolinate Anion: Degradation
Mechanism and CO(2) Separation Performance |
title_short | Accelerated Oxidative
Degradation of Phosphonium-Type
Ionic Liquid with l-Prolinate Anion: Degradation
Mechanism and CO(2) Separation Performance |
title_sort | accelerated oxidative
degradation of phosphonium-type
ionic liquid with l-prolinate anion: degradation
mechanism and co(2) separation performance |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10269244/ https://www.ncbi.nlm.nih.gov/pubmed/37332785 http://dx.doi.org/10.1021/acsomega.3c02116 |
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