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Solvent- and Base-Free Oxidation of 5-Hydroxymethylfurfural over a PdO/AlPO4-5 Catalyst under Mild Conditions
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2021-09-10 , DOI: 10.1021/acs.iecr.1c01911
Linhao Yu 1 , Hong Chen 2 , Zhe Wen 1 , Xueli Ma 2 , Yingying Li 2 , Yongdan Li 1, 3
Affiliation  

A solvent-free method was proposed to upgrade the biomass-derived compound 5-hydroxymethylfurfural (HMF). The oxidation of HMF to produce 2,5-furandicarboxylic acid (FDCA) has been examined in the presence of O2 without the addition of solvent and base. Different from the conversion of the aldehyde group on HMF as the initial oxidation step in H2O solvent, the hydroxyl group on HMF was first oxidized and FDCA was finally generated without the addition of solvent. The role of O2 is to replenish the consumption of active oxygen species on the catalyst surface. The oxidation of HMF to FDCA proceeded due to the solvent-free effect. A 83.6% FDCA selectivity at 38.8% HMF conversion was measured with a PdO/AlPO4-5 catalyst at 80 °C for 5 h and the reaction mechanism was proposed.

中文翻译:

在 PdO/AlPO4-5 催化剂上在温和条件下无溶剂和无碱氧化 5-羟甲基糠醛

提出了一种无溶剂方法来升级生物质衍生的化合物 5-羟甲基糠醛 (HMF)。HMF 氧化生成 2,5-呋喃二甲酸 (FDCA) 已在 O 2存在下进行了检测,而无需添加溶剂和碱。与 HMF 上的醛基转化作为 H 2 O 溶剂中的初始氧化步骤不同,HMF 上的羟基首先被氧化,最终生成 FDCA,而无需添加溶剂。O 2的作用是补充催化剂表面活性氧的消耗。由于无溶剂效应,HMF 氧化为 FDCA。使用 PdO/AlPO 4在 38.8% HMF 转化率下测得 83.6% FDCA 选择性-5 催化剂在 80 °C 下反应 5 h 并提出了反应机理。
更新日期:2021-09-22
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