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Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst
Chemical recycling of polymers to true monomers is pivotal for a circular plastics economy. Here, the first catalyzed chemical recycling of the widely investigated carbon dioxide derived polymer, poly(cyclohexene carbonate), to cyclohexene oxide and carbon dioxide is reported. The reaction requires...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
John Wiley and Sons Inc.
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9322669/ https://www.ncbi.nlm.nih.gov/pubmed/35442558 http://dx.doi.org/10.1002/anie.202201785 |
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author | Singer, Frances N. Deacy, Arron C. McGuire, Thomas M. Williams, Charlotte K. Buchard, Antoine |
author_facet | Singer, Frances N. Deacy, Arron C. McGuire, Thomas M. Williams, Charlotte K. Buchard, Antoine |
author_sort | Singer, Frances N. |
collection | PubMed |
description | Chemical recycling of polymers to true monomers is pivotal for a circular plastics economy. Here, the first catalyzed chemical recycling of the widely investigated carbon dioxide derived polymer, poly(cyclohexene carbonate), to cyclohexene oxide and carbon dioxide is reported. The reaction requires dinuclear catalysis, with the di‐Mg(II) catalyst showing both high monomer selectivity (>98 %) and activity (TOF=150 h(−1), 0.33 mol %, 120 °C). The depolymerization occurs via a chain‐end catalyzed depolymerization mechanism and DFT calculations indicate the high selectivity arises from Mg‐alkoxide catalyzed epoxide extrusion being kinetically favorable compared to cyclic carbonate formation. |
format | Online Article Text |
id | pubmed-9322669 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | John Wiley and Sons Inc. |
record_format | MEDLINE/PubMed |
spelling | pubmed-93226692022-07-30 Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst Singer, Frances N. Deacy, Arron C. McGuire, Thomas M. Williams, Charlotte K. Buchard, Antoine Angew Chem Int Ed Engl Communications Chemical recycling of polymers to true monomers is pivotal for a circular plastics economy. Here, the first catalyzed chemical recycling of the widely investigated carbon dioxide derived polymer, poly(cyclohexene carbonate), to cyclohexene oxide and carbon dioxide is reported. The reaction requires dinuclear catalysis, with the di‐Mg(II) catalyst showing both high monomer selectivity (>98 %) and activity (TOF=150 h(−1), 0.33 mol %, 120 °C). The depolymerization occurs via a chain‐end catalyzed depolymerization mechanism and DFT calculations indicate the high selectivity arises from Mg‐alkoxide catalyzed epoxide extrusion being kinetically favorable compared to cyclic carbonate formation. John Wiley and Sons Inc. 2022-05-05 2022-06-27 /pmc/articles/PMC9322669/ /pubmed/35442558 http://dx.doi.org/10.1002/anie.202201785 Text en © 2022 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH https://creativecommons.org/licenses/by/4.0/This is an open access article under the terms of the http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Communications Singer, Frances N. Deacy, Arron C. McGuire, Thomas M. Williams, Charlotte K. Buchard, Antoine Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst |
title | Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst |
title_full | Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst |
title_fullStr | Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst |
title_full_unstemmed | Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst |
title_short | Chemical Recycling of Poly(Cyclohexene Carbonate) Using a Di‐Mg(II) Catalyst |
title_sort | chemical recycling of poly(cyclohexene carbonate) using a di‐mg(ii) catalyst |
topic | Communications |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9322669/ https://www.ncbi.nlm.nih.gov/pubmed/35442558 http://dx.doi.org/10.1002/anie.202201785 |
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