Pt Nanoparticles Supported on Nitrogen‐Doped‐Carbon‐Decorated CeO₂ for Base‐Free Aerobic Oxidation of 5‐Hydroxymethylfurfural

Abstract

Currently, the base-free aerobic oxidation of biomass-derived 5-hydroxymethylfurfural (HMF) to produce 2,5-furandicarboxylic acid (FDCA) is attracting intense interest due to its prospects for the green, sustainable, and promising production of biomass-based aromatic polymers. Herein, we have developed a new Pt catalyst supported on nitrogen-doped-carbon-decorated CeO (NC-CeO ) for the aerobic oxidation of HMF in water without the addition of any homogeneous base. It was demonstrated that the small-sized Pt particles could be well dispersed on the surface of the hybrid NC-CeO support, and the activity of the supported Pt catalyst depended strongly on the surface structure and properties of the catalysts. The as-fabricated Pt/NC-CeO catalyst, with abundant surface defects, enhanced basicity, and favorable electron-deficient metallic Pt species, enabled an almost 100 % yield of FDCA in water with molecular oxygen (0.4 MPa) at 110 °C for 8 h without the addition of any homogeneous base, which is indicative of exceptional catalytic performance. Furthermore, this Pt/NC-CeO catalyst also showed good stability and reusability owing to strong metal-support interactions. An understanding of the role of surface structural defects and basicity of the hybrid NC-CeO support provides a basis for the rational design of high-performance and stable supported metal catalysts with practical applications in various transformations of biomass-derived compounds.

Tailoring the Reactive Oxygen Species in Mesoporous NiO for Selectivity-Controlled Aerobic Oxidation of 5-Hydroxymethylfurfural on a Loaded Pt Catalyst

“…However, it is well known that a higher reaction temperature can significantly promote the formation of FDCA. Hence, our catalyst has shown the highest productivity of 22.2 mol FDCA mol Pt –1 h –1 reported in the literature to date, in comparison with the previous most active Pt/PVP-ACS and Pt/NC-CeO 2 catalysts (20 mol FDCA mol Pt –1 h –1 ) at a same temperature of 110 °C. , …”

“…Hence, our catalyst has shown the highest productivity of 22.2 mol FDCA mol Pt −1 h −1 reported in the literature to date, in comparison with the previous most active Pt/PVP-ACS and Pt/NC-CeO 2 catalysts (20 mol FDCA mol Pt −1 h −1 ) at a same temperature of 110 °C. 13,16 The stability and reusability of a heterogeneous catalyst are highly important for sustainable chemistry and potential industrialization. The possible leaching of metals from the catalyst is verified using a hot-filtration process.…”

“…14 As expected, specialized carbon incorporation with an oxide (i.e., Pt/C-MgO or Pt/NC-CeO 2 ) was also found to show superior catalytic performances owing to abundant surface defects and enhanced basicity of the composite supports. 15,16 However, specialized carbon materials are very expensive and their fabrications are quite complicated. Notably, the preparation parameters must be strictly controlled to reproduce the unique catalytic property.…”

Synthesis of Ni3Si4O10(OH)2 Porous Microspheres as Support of Pd Catalyst for Hydrogenation Reaction

“…Generally, the solid supports upon which to disperse the noble metals need to have a large surface area, good structural stability, and the interaction between the support and the active phase has significant effects on the catalytic activity and the stability of the supported noble metals. Besides conventional supports, such as activated carbon, silica, and alumina, solid materials with a specific pore structure, such as ordered mesoporous materials [1,2,3], metal-organic frameworks (MOFs) [4,5], three dimensionally ordered macroporous (3DOM) materials [6,7], and other multifunctional composites/hybrids [8,9,10] are attracting increasing interest for the preparation of supported noble metal catalysts. Perovskite materials have also been explored for supporting noble metals and the so-called “smart” catalysts were developed, in which the noble metal can reversibly move into and out of the perovskite lattice with a change in the oxidizing and reducing environments [11,12,13].…”

2,5-Furandicarboxylic acid production via catalytic oxidation of 5-hydroxymethylfurfural: Catalysts, processes and reaction mechanism

“…Moreover, increase of nitrogen content in carbon support has a promotion effect on catalytic activity by more basic sites and higher alkalinity. Li et al[104] developed nitrogen-dopedcarbon-decorated CeO 2 (NC-CeO 2 ) as a basic support to fabricate Pt/NC-CeO 2 catalyst, exhibiting exceptional catalytic efficiency superior to the Pt catalysts supported on CeO 2 and g-C 3 N 4 with an almost 100% FDCA yield at 110°C for 8 h (or 150°C for 4 h) in free of any soluble base. CO 2…”