Silicon-catalyzed depolymerization of polyethers: pushing scope, practicability and mechanistic understanding
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 req...
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| Main Authors: | , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
May 2024
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| In: |
ChemCatChem
Year: 2024, Volume: 16, Issue: 10, Pages: 1-6 |
| ISSN: | 1867-3899 |
| DOI: | 10.1002/cctc.202301615 |
| Online Access: | Verlag, kostenfrei, Volltext: https://doi.org/10.1002/cctc.202301615 Verlag, kostenfrei, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1002/cctc.202301615 
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| Author Notes: | Nils Ansmann, Kerstin Johann, Philippe Favresse, Tobias Johann, Michael Fiedel, and Lutz Greb |
| Summary: | 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. |
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| Item Description: | Gesehen am 29.05.2024 |
| Physical Description: | Online Resource |
| ISSN: | 1867-3899 |
| DOI: | 10.1002/cctc.202301615 |