Niakan Mahsa, Qian Chao, Zhou Shaodong
College of Chemical and Biological Engineering, Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology, Zhejiang University, 310027, Hangzhou, P. R. China.
Zhejiang Provincial Innovation Center of Advanced Chemicals Technology, Institute of Zhejiang University- Quzhou, 324000, Quzhou, P.R. China.
ChemSusChem. 2025 Feb 1;18(3):e202401930. doi: 10.1002/cssc.202401930. Epub 2024 Nov 7.
Currently one-pot conversion of sugars to 2,5-furandicarboxylic acid (FDCA) is of significant interest due to the attainability of sugars as a feedstock and the enormous potential of FDCA as a bioplastic monomer. However, it remains challenging to construct efficient catalysts for this process. In this study, CoO species were anchored to a sulfonated covalent organic framework thus affording a bifunctional catalyst (CoO@COF-SOH). The sulfonic acid sites dehydrate sugars to 5-hydroxymethylfurfural (HMF), which is next oxidized to FDCA as catalyzed by the CoO species. Such a process was applied in the conversion of various binary and ternary deep eutectic mixtures involving choline chloride and sugars without additional solvent. The maximum FDCA yield of 84 % was obtained using glucose-fructose eutectic mixture as the substrates. Moreover, the catalyst was recyclable and stable under the applied reaction conditions. Our process eliminates the employment of organic solvents and expensive noble metal catalysts, resulting in green and economic biomass conversions.
目前，由于糖作为原料易于获取以及2,5-呋喃二甲酸（FDCA）作为生物塑料单体具有巨大潜力，将糖一锅法转化为FDCA备受关注。然而，构建用于此过程的高效催化剂仍然具有挑战性。在本研究中，氧化钴物种锚定在磺化共价有机框架上，从而得到一种双功能催化剂（CoO@COF-SOH）。磺酸位点将糖脱水生成5-羟甲基糠醛（HMF），随后在氧化钴物种的催化下将其氧化为FDCA。该过程应用于各种涉及氯化胆碱和糖的二元和三元低共熔混合物的转化，无需额外溶剂。以葡萄糖-果糖低共熔混合物为底物时，FDCA的最大产率为84%。此外，该催化剂在应用的反应条件下可回收且稳定。我们的工艺避免了使用有机溶剂和昂贵的贵金属催化剂，实现了绿色且经济的生物质转化。
