Journal
CHEMICAL SCIENCE
Volume 10, Issue 17, Pages 4692-4698Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9sc00322c
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Funding
- National Natural Science Foundation of China [21673249, 21733011]
- National Key Research and Development Program of China [2017YFA0403103]
- Key Research Program of Frontier Sciences, CAS [QYZDY-SSW-SLH013]
- Youth Innovation Promotion Association of the Chinese Academy of Sciences [2017043]
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Development of efficient strategies for biomass valorization is a highly attractive topic. Herein, we conducted the first work on electrocatalytic oxidation of renewable furfural to produce the key bioactive intermediate 5-hydroxy-2(5H)-furanone (HFO). It was demonstrated that using H2O as the oxygen source and metal chalcogenides (CuS, ZnS, PbS, etc.) as electrocatalysts, the reaction could proceed efficiently, and the CuS nanosheets prepared in this work showed the best performance and provided high HFO selectivity (83.6%) and high conversion (70.2%) of furfural. In addition, the CuS electrocatalyst showed long-term stability. Mechanism investigation showed that furfural was oxidized to HFO via multistep reactions, including C-C cleavage, subsequent ring opening and oxidation, and intramolecular isomerization.
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