Heterogeneous Catalysis in Aerobic Oxidation Processes

Heterogeneous catalysis in aerobic oxidation underpins a range of industrial and environmental transformations by exploiting solid catalysts and molecular oxygen to convert organic substrates with high efficiency and selectivity. This approach circumvents the need for stoichiometric oxidants, reducing waste and energy consumption. Central to these processes are active metal sites—often noble metals or first-row transition metals—dispersed on high-surface-area supports, which facilitate O₂ activation, substrate adsorption and the subsequent transfer of oxygen atoms. Fine-tuning of metal–support interactions, particle size and surface structure allows control over selectivity towards aldehydes, ketones, acids or epoxides. Advances in catalyst design, including single-atom catalysts and bimetallic nanoclusters, have enhanced atom efficiency and tunable reactivity. Applications span the synthesis of bulk and speciality chemicals, biomass valorisation to biofuels and green production of pharmaceutical intermediates. Ongoing research seeks to address challenges in catalyst stability, scalability and mechanistic understanding of O₂ activation and radical versus surface-mediated pathways.

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Heterogeneous Catalysis in Aerobic Oxidation Processes publication trend

The graph below shows the total number of articles in heterogeneous catalysis in aerobic oxidation processes across all publications each year (not limited to Nature Index journals).

Technical terms

Heterogeneous catalyst: A catalyst in a different phase from the reactants, typically solid in contact with liquid or gas reagents.

Aerobic oxidation: An oxidation reaction using molecular oxygen as the oxidant under mild conditions.

Support: A solid material on which active catalytic species are dispersed to enhance stability and surface area.

Turnover frequency (TOF): The number of substrate molecules converted per active site per unit time.

Single-atom catalyst (SAC): A catalyst in which isolated metal atoms are dispersed on a support, maximising atom utilisation and selectivity.

References

1. Interplay of Product Selectivity and Isolated Ru-Oxo Sites in the Solvent-Free Oxidization of Benzyl Alcohol. The Journal of Physical Chemistry C (2024).
2. Microwave-Assisted Synthesis of Pd Nanoparticles into Wood Block (Pd@wood) as Efficient Catalyst for 4-Nitrophenol and Cr(VI) Reduction. Nanomaterials (2023).
3. Green Procedure for Aerobic Oxidation of Benzylic Alcohols with Palladium Supported on Iota-Carrageenan in Ethanol. Polymers (2021).