Hydrophilic mesoporous poly(ionic liquid)-supported Au–Pd alloy nanoparticles towards aerobic oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid under mild conditions

Abstract

Au–Pd nanoalloy in hydrophilic mesoporous poly(ionic liquid) shows high activity for oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid with atmospheric O2.

Highly Efficient Oxidation of 5‐Hydroxymethylfurfural to 2,5‐Furandicarboxylic Acid with Heteropoly Acids and Ionic Liquids

“…Zhang and co‐workers developed a series of magnetic‐material‐supported noble‐metal catalysts that provided high FDCA yields with addition of base and could be easily separated by a magnet and efficiently reused . Recently, supported Au–Pd alloy catalysts have displayed excellent catalytic activity . Furthermore, by employing hydrophilic mesoporous poly(ionic liquid) (MPIL) as the support, it was possible to control the surface wettability of Au–Pd/MPIL by varying the crosslinkers with different hydrophilic or hydrophobic properties .…”

“…Recently, supported Au–Pd alloy catalysts have displayed excellent catalytic activity . Furthermore, by employing hydrophilic mesoporous poly(ionic liquid) (MPIL) as the support, it was possible to control the surface wettability of Au–Pd/MPIL by varying the crosslinkers with different hydrophilic or hydrophobic properties . Mishra et al.…”

“…trol the surfacewettability of Au-Pd/MPIL by varying the crosslinkers with different hydrophilic or hydrophobic properties. [11] Mishra et al reported aM nCo 2 O 4 spinel-supported Ru catalyst that provided ah igh FDCA yield in 10 h. [12] Althoughn oblemetal catalysts show great promise for FDCA production,t heir major drawback is the high cost of the metal, which limits larger-scale production. [13] As eries of non-noble-metal catalysts were employedf or the HMF oxidation.…”

AuPd‐Fe3O4 Nanoparticle‐Catalyzed Synthesis of Furan‐2,5‐dimethylcarboxylate from 5‐Hydroxymethylfurfural under Mild Conditions

“…In recent years, several reports have been published on bimetallic or even trimetallic catalysts for HMF oxidation at <100 °C under 1 atm O 2 . However, an elevated temperature is still necessary for high yields in this reaction (Table S4 in the Supporting Information) because the conversion of HMF with most known catalysts is very sluggish at room temperature under atmospheric O 2 …”

“…In benzyl alcohol oxidation catalyzed by various heterogeneous metal species, reactions employing bimetallic AuPd alloy have shown a synergistic effect compared with those catalyzed by monometallic Au or Pd NP catalysts . Therefore, several studies on the synthesis of FDCA by using AuPd NPs have been performed . Reactions employing AuPd NPs showed better results than those with Au monometallic NPs; however, in most cases, the reactions generally required 60–100 °C heating under oxygen pressure in the range of 1–10 bar.…”