2,5-Furandicarboxylic acid (FDCA) is an important and renewable building block and can serve as an alternative to terephthalic acid in the production of bio-based degradable plastic. In this study, Cu-doped MnO₂ nanorods were prepared by a facile hydrothermal redox method and employed as catalysts for the selective oxidation of 5-hydroxymethylfurfural (HMF) to FDCA using tert-butyl hydroperoxide (TBHP) as an oxidant. The catalysts were characterized using X-ray diffraction analysis, Fourier transform infrared spectroscopy, thermogravimetric analysis, and transmission electron microscopy. The effects of oxidants, solvents, and reaction conditions on the oxidation of HMF were investigated, and a reaction mechanism was proposed. Experimental results demonstrated that 99.4% conversion of HMF and 96.3% selectivity of FDCA were obtained under suitable conditions, and tert-butanol was the most suitable solvent when TBHP was used as an oxidant. More importantly, the Cu-doped MnO₂ catalyst can maintain durable catalytic activity after being recycled for more than ten times.

2,5-呋喃二甲酸（FDCA）是重要的可再生建筑材料，在生物基可降解塑料的生产中可以替代对苯二甲酸。在这项研究中，掺Cu的的MnO _2个由一个浅显的水热氧化还原方法制备并用作催化剂的5-羟甲基糠醛（HMF）选择性氧化成FDCA使用纳米棒叔丁基过氧化氢（TBHP）作为氧化剂。使用X射线衍射分析，傅立叶变换红外光谱，热重分析和透射电子显微镜对催化剂进行了表征。研究了氧化剂，溶剂和反应条件对HMF氧化的影响，并提出了反应机理。实验结果表明，在适当的条件下，HMF的转化率为99.4％，FDCA的选择性为96.3％，而叔丁基醇作为TBHP的氧化剂是最合适的溶剂。更重要的是，掺杂Cu的MnO ₂催化剂在循环使用十次以上之后可以保持持久的催化活性。