Abstract In this study, a new kind of magnetic vanadium-based catalyst was successfully prepared and employed to produce 2, 5-diformylfuran (DFF) in the liquid phase through selective oxidation of biomass-derived 5-hydroxymethylfurfur (HMF) with air as oxidant. It was found that magnetic Fe 3 O 4 nanoparticles supported NH 4 ·V 3 O 8 showed excellent catalytic performance with the achievement of 95.5% HMF conversion along with 82.9% selectivity to DFF under optimal reaction conditions. More importantly, the catalyst could be readily separated from the reaction mixture by a permanent magnet, and recycled several times without the loss of its catalytic activity. Graphic Abstract The NH 4 ·V 3 O 8 /Fe 3 O 4 catalyst showed high activity for selective oxidation of 5-hydroxymethylfurfural into 2, 5-diformylfuran.

中文翻译：

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以空气为氧化剂的磁性钒基催化剂催化 5-羟甲基糠醛高效选择性氧化为 2, 5-二甲酰基呋喃

摘要 本研究成功制备了一种新型磁性钒基催化剂，以空气为氧化剂，通过选择性氧化生物质衍生的 5-羟甲基糠基 (HMF)，在液相中制备 2, 5-二甲酰基呋喃 (DFF)。 . 结果表明，磁性Fe 3 O 4 纳米颗粒负载NH 4 ·V 3 O 8 表现出优异的催化性能，在最佳反应条件下HMF转化率为95.5%，对DFF的选择性为82.9%。更重要的是，催化剂可以很容易地通过永磁体从反应混合物中分离出来，并且可以循环多次而不会损失其催化活性。图形摘要 NH 4 ·V 3 O 8 /Fe 3 O 4 催化剂在将5-羟甲基糠醛选择性氧化成2, 5-二甲酰基呋喃方面表现出很高的活性。