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Metal-Free N-Doped Carbons for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell Valorization Opportunity
[Image: see text] High anthropogenic CO(2) emissions are among the main causes of climate change. Herein, we investigate the use of CO(2) for the synthesis of organic cyclic carbonates on metal-free nitrogen-doped carbon catalysts obtained from chitosan, chitin, and shrimp shell wastes, both in batc...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2022
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9942530/ https://www.ncbi.nlm.nih.gov/pubmed/36845462 http://dx.doi.org/10.1021/acssuschemeng.2c04443 |
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author | Polidoro, Daniele Perosa, Alvise Rodríguez-Castellón, Enrique Canton, Patrizia Castoldi, Lidia Rodríguez-Padrón, Daily Selva, Maurizio |
author_facet | Polidoro, Daniele Perosa, Alvise Rodríguez-Castellón, Enrique Canton, Patrizia Castoldi, Lidia Rodríguez-Padrón, Daily Selva, Maurizio |
author_sort | Polidoro, Daniele |
collection | PubMed |
description | [Image: see text] High anthropogenic CO(2) emissions are among the main causes of climate change. Herein, we investigate the use of CO(2) for the synthesis of organic cyclic carbonates on metal-free nitrogen-doped carbon catalysts obtained from chitosan, chitin, and shrimp shell wastes, both in batch and in continuous flow (CF). The catalysts were characterized by N(2) physisorption, CO(2)-temperature-programmed desorption, X-ray photoelectron spectroscopy, scanning electron microscopy, and CNHS elemental analysis, and all reactivity tests were run in the absence of solvents. Under batch conditions, the catalyst obtained by calcination of chitin exhibited excellent performance in the conversion of epichlorohydrin (selected as a model epoxide), resulting in the corresponding cyclic carbonate with 96% selectivity at complete conversion, at 150 °C and 30 bar CO(2), for 4 h. On the other hand, in a CF regime, a quantitative conversion and a carbonate selectivity >99% were achieved at 150 °C, by using the catalyst obtained from shrimp waste. Remarkably, the material displayed an outstanding stability over a reaction run time of 180 min. The robustness of the synthetized catalysts was confirmed by their good operational stability and reusability: ca. (75 ± 3)% of the initial conversion was achieved/retained by all systems, after six recycles. Also, additional batch experiments proved that the catalysts were successful on different terminal and internal epoxides. |
format | Online Article Text |
id | pubmed-9942530 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-99425302023-02-22 Metal-Free N-Doped Carbons for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell Valorization Opportunity Polidoro, Daniele Perosa, Alvise Rodríguez-Castellón, Enrique Canton, Patrizia Castoldi, Lidia Rodríguez-Padrón, Daily Selva, Maurizio ACS Sustain Chem Eng [Image: see text] High anthropogenic CO(2) emissions are among the main causes of climate change. Herein, we investigate the use of CO(2) for the synthesis of organic cyclic carbonates on metal-free nitrogen-doped carbon catalysts obtained from chitosan, chitin, and shrimp shell wastes, both in batch and in continuous flow (CF). The catalysts were characterized by N(2) physisorption, CO(2)-temperature-programmed desorption, X-ray photoelectron spectroscopy, scanning electron microscopy, and CNHS elemental analysis, and all reactivity tests were run in the absence of solvents. Under batch conditions, the catalyst obtained by calcination of chitin exhibited excellent performance in the conversion of epichlorohydrin (selected as a model epoxide), resulting in the corresponding cyclic carbonate with 96% selectivity at complete conversion, at 150 °C and 30 bar CO(2), for 4 h. On the other hand, in a CF regime, a quantitative conversion and a carbonate selectivity >99% were achieved at 150 °C, by using the catalyst obtained from shrimp waste. Remarkably, the material displayed an outstanding stability over a reaction run time of 180 min. The robustness of the synthetized catalysts was confirmed by their good operational stability and reusability: ca. (75 ± 3)% of the initial conversion was achieved/retained by all systems, after six recycles. Also, additional batch experiments proved that the catalysts were successful on different terminal and internal epoxides. American Chemical Society 2022-09-29 /pmc/articles/PMC9942530/ /pubmed/36845462 http://dx.doi.org/10.1021/acssuschemeng.2c04443 Text en © 2022 American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Polidoro, Daniele Perosa, Alvise Rodríguez-Castellón, Enrique Canton, Patrizia Castoldi, Lidia Rodríguez-Padrón, Daily Selva, Maurizio Metal-Free N-Doped Carbons for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell Valorization Opportunity |
title | Metal-Free N-Doped Carbons
for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell
Valorization Opportunity |
title_full | Metal-Free N-Doped Carbons
for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell
Valorization Opportunity |
title_fullStr | Metal-Free N-Doped Carbons
for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell
Valorization Opportunity |
title_full_unstemmed | Metal-Free N-Doped Carbons
for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell
Valorization Opportunity |
title_short | Metal-Free N-Doped Carbons
for Solvent-Less CO(2) Fixation Reactions: A Shrimp Shell
Valorization Opportunity |
title_sort | metal-free n-doped carbons
for solvent-less co(2) fixation reactions: a shrimp shell
valorization opportunity |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9942530/ https://www.ncbi.nlm.nih.gov/pubmed/36845462 http://dx.doi.org/10.1021/acssuschemeng.2c04443 |
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