Development of green catalytic processes using biobased feedstock for valuable chemicals such as 5-hydroxymethylfurfural (HMF) is hotly pursued. 2, 5-Furandicarboxylic acid (FDCA), a bio-based alternative to terephthalic acid was efficiently synthesized by oxidation of HMF using MnFe₂O₄ spinel structured magnetic nanoparticles (MNPs) and tert-butyl hydroperoxide as an oxidant. MnFe₂O₄ catalyst showed the highest activity and selectivity and gave 85% yield of FDCA at 100 °C in 5 h. The higher activity of MnFe₂O₄ catalyst is due to the variable oxidation state of manganese. The combination of MnFe₂O₄ catalyst and TBHP oxidant requires less time and energy compared to other reported processes of FDCA synthesis. Also, many reported methods have used a homogeneous base for FDCA synthesis which is totally avoided in the current process. The concentration profiles of reactants and products were established and kinetics determined. The effects of various reaction parameters were studied to validate kinetic model. The catalyst was easily recycled due to its magnetic property and showed good catalytic activity up to four cycles. All metal ferrites were characterized by different analytical techniques. The catalyst maintained its fidelity.

人们热切地寻求使用生物基原料开发有价值的化学品（例如5-羟甲基糠醛（HMF））的绿色催化工艺。通过使用MnFe ₂ O ₄尖晶石结构的磁性纳米颗粒（MNP）和叔丁基氢过氧化物作为氧化剂，通过HMF的氧化，有效合成了2,5-呋喃二甲酸（FDCA），一种对苯二甲酸的生物基替代物。MnFe ₂ O ₄催化剂表现出最高的活性和选择性，在100°C下5 h的FDCA产率为85％。MnFe ₂ O ₄催化剂的较高活性归因于锰的可变氧化态。MnFe ₂ O ₄的组合与其他已报道的FDCA合成方法相比，该催化剂和TBHP氧化剂所需的时间和能量更少。而且，许多报道的方法已经使用了均相碱来进行FDCA合成，这在当前工艺中是完全避免的。建立反应物和产物的浓度曲线并确定动力学。研究了各种反应参数的影响，以验证动力学模型。该催化剂由于其磁性而易于回收利用，并且在四个循环之前均显示出良好的催化活性。所有金属铁氧体均采用不同的分析技术进行表征。催化剂保持其保真度。