Catalytic Oxidation of Biomass-Derived Sugars

Catalytic oxidation of biomass-derived sugars harnesses renewable monosaccharides such as glucose, arabinose and xylose to produce value-added organic acids under mild conditions. Heterogeneous catalysts—notably gold, palladium and bimetallic systems—enable selective transformation of the primary alcohol function to carboxyl groups, yielding aldonic acids (for example, gluconic acid) and higher oxidation products such as glucaric acid. Reaction efficiency depends on the interplay between active metal sites, support architecture and parameters including pH, temperature and oxygen supply. Nanometre-scale metal particles dispersed on oxide or carbon supports optimise surface area and electronic properties, while reactor innovations—such as tandem fixed-bed and slurry systems—mitigate mass-transfer limitations. Mechanistic studies have identified surface oxygen species as key intermediates and clarified pathways leading to overoxidation and catalyst deactivation. Recent advances emphasise sustainable protocols that avoid sacrificial bases and employ ambient air as oxidant. This field addresses global imperatives for green chemistry and circular bioeconomy, providing routes to platform chemicals for pharmaceuticals, food additives and polymer precursors while reducing reliance on fossil resources.

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Catalytic Oxidation of Biomass-Derived Sugars publication trend

The graph below shows the total number of articles in catalytic oxidation of biomass-derived sugars across all publications each year (not limited to Nature Index journals).

Technical terms

Biomass-derived sugars: Monosaccharides obtained from lignocellulosic or other renewable biomass sources, including glucose, xylose and arabinose.

Catalytic oxidation: A chemical process in which a catalyst facilitates the selective removal of hydrogen or addition of oxygen to organic substrates, converting alcohol groups into carbonyl or carboxyl functionalities.

Supported catalyst: A heterogeneous catalyst comprising active metal nanoparticles dispersed on a high-surface‐area solid matrix (oxide, carbon or zeolite) to enhance stability and accessibility.

Aldonic acid: An organic acid formed by oxidation of the aldehyde group of a reducing sugar, yielding a carboxylic acid at the C-1 position (for example, gluconic acid from glucose).

Nanoconfinement: The effect by which pore size and geometry at the nanoscale influence the local concentration, orientation and transport of reactants around catalytic sites, thereby altering activity and selectivity.

References

1. Pd-Bi-Based Catalysts for Selective Oxidation of Glucose into Gluconic Acid: The Role of Local Environment of Nanoparticles in Dependence of Their Composition. Catalysts (2024).
2. Arabinose oxidation in a fixed bed of extrudates and solid foams containing gold nanoparticles. Chemical Engineering Journal (2023).
3. Influence of Local Environments in Pores of Different Size on the Catalytic Liquid-Phase Oxidation of d‑Glucose by Au Nanoparticles Supported on Nanoporous Carbon. ACS Applied Nano Materials (2020).
4. Base-free glucose oxidation using air with supported gold catalysts. Green Chemistry (2014).