Ruthenium Supported on High‐Surface‐Area Zirconia as an Efficient Catalyst for the Base‐Free Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid,ChemSusChem

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Ruthenium Supported on High‐Surface‐Area Zirconia as an Efficient Catalyst for the Base‐Free Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid
ChemSusChem ( IF 7.5 ) Pub Date : 2018-06-05 , DOI: 10.1002/cssc.201800448
Christian M. Pichler ₁ , Mohammad G. Al-Shaal ₁ , Dong Gu ₂ , Hrishikesh Joshi ₁ , Wirawan Ciptonugroho _{3,

4} , Ferdi Schüth ₁

Affiliation

Several ZrO₂‐supported ruthenium catalysts were prepared and utilized in the oxidation of 5‐hydroxymethylfurfural (HMF) to 2,5‐furandicarboxylic acid (FDCA) under base‐free conditions. Full conversion of HMF and almost perfect selectivity towards FDCA (97 %) were achieved after 16 h by using pure O₂ as an oxidant and water as a solvent. The catalytic tests show that the size of the Ru particles is crucial for the catalytic performance and that the utilization of high‐surface‐area ZrO₂ leads to formation of very small Ru particles. Superior activity was obtained for catalysts based on ZrO₂ that had been synthesized by a surface‐casting method and has high surface areas up to 256 m² g⁻¹. In addition to good activity and selectivity, these catalysts show also high stability and constant activity upon recycling, confirming the suitability of Ru/ZrO₂ in the base‐free oxidation of HMF.

中文翻译：

钌在高表面积氧化锆上负载，可作为5-羟基甲基糠醛无碱氧化为2,5-呋喃二甲酸的高效催化剂

制备了几种ZrO ₂负载的钌催化剂，并用于在无碱条件下将5-羟甲基糠醛（HMF）氧化为2,5-呋喃二甲酸（FDCA）。通过使用纯O ₂作为氧化剂和水作为溶剂，在16小时后，HMF的完全转化和对FDCA的几乎完美的选择性（97％）得以实现。催化测试表明，Ru颗粒的尺寸对于催化性能至关重要，高表面积ZrO _2的利用导致形成非常小的Ru颗粒。通过表面铸造法合成的基于ZrO _2的催化剂具有优异的活性，具有高达256 m ² g ^-1的高表面积。这些催化剂除了具有良好的活性和选择性外，还具有很高的稳定性和循环利用后的恒定活性，这证明了Ru / ZrO ₂在HMF的无碱氧化中的适用性。

更新日期：2018-06-05

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