Mechanochemical Synthesis of Mesoporous Copper Oxide for the Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid.

IF 3.6 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemistry - A European Journal Pub Date : 2026-10-06 DOI:10.1002/chem.71779

Peng Yang, Xiquan Chen, Hualei Hu, Soliman I El-Hout, Guojun Lan, Yong Yang, Guowen Lu, Qianquan Fang, Jian Zhang, Chunlin Chen

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Abstract

Mesoporous copper oxide (CuO) fabricated via mechanochemical milling was employed as a robust catalyst for the efficient synthesis of 2,5-furandicarboxylic acid (FDCA) in a sodium hypochlorite (NaClO) oxidation system. We demonstrate that introducing cetyltrimethylammonium bromide (CTAB) in the mechanochemical synthesis process successfully creates mesoporosity, reduces the size of CuO nanoparticles, and modulates the ratio between surface oxygen vacancies (O_V) and lattice oxygen (O_L). Owing to its minimized particle size, enlarged pore volume, and elevated O_V/O_L ratio, the CuO@0.4 CTAB catalyst delivers exceptional catalytic activity and reusability toward 5-hydroxymethylfurfural (HMF) oxidation, affording a maximum FDCA yield of 95.2% under optimal reaction conditions. Furthermore, maintaining the solution pH value above 12 greatly inhibits the over-oxidation of FDCA and slows the rapid consumption of NaClO during the reaction.

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机械化学合成介孔氧化铜以氧化5-羟甲基糠醛为2,5-呋喃二羧酸。

采用机械化学研磨法制备的介孔氧化铜（CuO）作为催化剂，在次氯酸钠（NaClO）氧化体系中高效合成2,5-呋喃二羧酸（FDCA）。我们证明，在机械化学合成过程中引入十六烷基三甲基溴化铵（CTAB）成功地创造了介孔，减小了CuO纳米颗粒的尺寸，并调节了表面氧空位（OV）和晶格氧（OL）之间的比例。CuO@0.4 CTAB催化剂具有极小的粒径、较大的孔体积和较高的OV/OL比，对5-羟甲基糠醛（HMF）氧化具有优异的催化活性和可重复使用性，在最佳反应条件下，FDCA的产率最高可达95.2%。此外，保持溶液pH值在12以上，可以极大地抑制FDCA的过度氧化，减缓反应过程中NaClO的快速消耗。

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来源期刊

Chemistry - A European Journal 化学-化学综合

CiteScore

7.90

自引率

4.70%

发文量

1808

审稿时长

1.8 months

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