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Silicon‐Catalyzed Depolymerization of Polyethers: Pushing Scope, Practicability and Mechanistic Understanding.

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Title: Silicon‐Catalyzed Depolymerization of Polyethers: Pushing Scope, Practicability and Mechanistic Understanding.
Authors: Ansmann, Nils1 (AUTHOR), Johann, Kerstin2 (AUTHOR), Favresse, Philippe2 (AUTHOR), Johann, Tobias2 (AUTHOR), Fiedel, Michael2 (AUTHOR), Greb, Lutz1 (AUTHOR) greb@uni-heidelberg.de
Source: ChemCatChem. 5/21/2024, Vol. 16 Issue 10, p1-6. 6p.
Subjects: Depolymerization, Polyethers, Circular economy, Superacids, Manufacturing processes, Lewis acids
Abstract: The depolymerization of polyethers is a sustainable yet challenging opportunity for a circular economy in materials processing. While we recently identified silicon Lewis superacids as promising catalysts for this transformation, limited scope (e. g. terminal OH groups not tolerated) and strict requirements for anhydrous conditions hampered wider applicability. In the present work, the impact of different polyether structures and reaction conditions were evaluated. By doing so, the generality for structural variations was confirmed and substantial improvements made the depolymerization feasible for large‐scale applications under ambient conditions. Based on systematic experimental screenings, a refined mechanistic model of the depolymerization process is developed. [ABSTRACT FROM AUTHOR]
Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Silicon‐Catalyzed Depolymerization of Polyethers: Pushing Scope, Practicability and Mechanistic Understanding.
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  Data: <searchLink fieldCode="JN" term="%22ChemCatChem%22">ChemCatChem</searchLink>. 5/21/2024, Vol. 16 Issue 10, p1-6. 6p.
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  Data: <searchLink fieldCode="DE" term="%22Depolymerization%22">Depolymerization</searchLink><br /><searchLink fieldCode="DE" term="%22Polyethers%22">Polyethers</searchLink><br /><searchLink fieldCode="DE" term="%22Circular+economy%22">Circular economy</searchLink><br /><searchLink fieldCode="DE" term="%22Superacids%22">Superacids</searchLink><br /><searchLink fieldCode="DE" term="%22Manufacturing+processes%22">Manufacturing processes</searchLink><br /><searchLink fieldCode="DE" term="%22Lewis+acids%22">Lewis acids</searchLink>
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  Data: The depolymerization of polyethers is a sustainable yet challenging opportunity for a circular economy in materials processing. While we recently identified silicon Lewis superacids as promising catalysts for this transformation, limited scope (e. g. terminal OH groups not tolerated) and strict requirements for anhydrous conditions hampered wider applicability. In the present work, the impact of different polyether structures and reaction conditions were evaluated. By doing so, the generality for structural variations was confirmed and substantial improvements made the depolymerization feasible for large‐scale applications under ambient conditions. Based on systematic experimental screenings, a refined mechanistic model of the depolymerization process is developed. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of ChemCatChem is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1002/cctc.202301615
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        Text: English
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              Text: 5/21/2024
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