Wu, Jiajie, Shen, Lingyun, Duan, Sai et al. (7 more authors) (2020) Selective Catalytic Dehydrogenative Oxidation of Bio-Polyols to Lactic Acid. Angewandte Chemie - International Edition. ISSN 1433-7851
Abstract
The global demand for lactic acid (LA) is increasing due to its successful application as monomer for the manufacture of bioplastics. Although N-heterocyclic carbene (NHC) iridium complexes are promising molecular catalysts for LA synthesis, their instabilities have hindered their utilization especially in commercial applications. Here, we report that a porous self-supported NHC-iridium coordination polymer can efficiently prevent the clusterization of corresponding NHC-Ir molecules and can function as a solid molecular recyclable catalyst for dehydrogenation of bio-polyols to form LA with excellent activity (97 %) and selectivity (>99 %). A turnover number of up to 5700 could be achieved in a single batch, due to the synergistic participation of the Ba2+ and hydroxide ions, as well as the blockage of unwanted pathways by adding methanol. Our findings demonstrate a potential route for the industrial production of LA from cheap and abundant bio-polyols, including sorbitol.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | 2020 Wiley-VCH Verlag GmbH & Co. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details. |
Keywords: | bio-polyols,lactic acid,N-heterocyclic carbene iridium complex,oxidative dehydrogenation,self-supporting |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Chemistry (York) |
Depositing User: | Pure (York) |
Date Deposited: | 23 Jun 2020 08:20 |
Last Modified: | 21 Jan 2025 17:47 |
Published Version: | https://doi.org/10.1002/anie.202004174 |
Status: | Published online |
Refereed: | Yes |
Identification Number: | 10.1002/anie.202004174 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:162216 |