Electrochemical deprotonation of halohydrins enables cascading reactions for CO2 capture and conversion into ethylene carbonate
Abstract Electrochemical processes for CO2 mitigation can be broadly categorized into two approaches: CO2 capture via electrochemically generated bases and CO2 conversion through electrochemical reduction. Recent advancements have been concentrated to developing methods that efficiently capture and...
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| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-05-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-025-60354-8 |
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| Summary: | Abstract Electrochemical processes for CO2 mitigation can be broadly categorized into two approaches: CO2 capture via electrochemically generated bases and CO2 conversion through electrochemical reduction. Recent advancements have been concentrated to developing methods that efficiently capture and release CO2 or reduce base-CO2 adducts while regenerating bases for subsequent CO2 capture. In this study, we introduce an electrochemical strategy that integrates CO2 capture and conversion through a series of domino reactions initiated by the electrochemical generation of organic bases. This method involves the electrochemical deprotonation of halohydrin molecules, which generate hydrogen and halo-alkoxides that capture CO2 and spontaneously undergo intramolecular cyclization to yield cyclic carbonates. Direct and indirect Faradaic efficiency of up to 100% is achieved for both hydrogen and ethylene carbonate production, demonstrating highly selective sequential capture and conversion reactions. Our system provides a scalable pathway for synthesizing various cyclic carbonates directly from diluted CO2 sources. |
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| ISSN: | 2041-1723 |