Selective Catalytic Oxidation of Alcohols

Selective catalytic oxidation of alcohols transforms primary and secondary alcohols into carbonyl-containing products such as aldehydes, ketones or acids using an oxidant, most often molecular oxygen. This methodology is central to fine-chemical and pharmaceutical manufacture, offering atom-efficient routes and minimising hazardous by-products. Advances in heterogeneous catalysis have harnessed noble-metal (Pd, Au, Pt) nanoparticles on oxide or carbon supports, as well as emerging non-noble-metal systems, to achieve high activity and selectivity under mild conditions. Key strategies include precise control of nanoparticle size and composition, optimisation of support acidity or porosity, and the adoption of solvent-free or aqueous media. Innovations such as in situ generation of oxidising species and the exploitation of cooperative dual-site redox mechanisms have broadened substrate scope from aromatic to aliphatic alcohols. The global importance of this research lies in greener synthetic processes that reduce energy use and eliminate stoichiometric oxidants, with applications spanning agrochemicals, fragrances, biomass valorisation and platform chemical production.

Research from Nature Portfolio

A carbon-hybrid supported platinum nanoparticle catalyst has been shown to oxidise benzyl alcohol derivatives to their corresponding benzaldehydes in aqueous toluene at 80 °C under simple O₂–H₂ conditions. Transmission electron microscopy, high-resolution TEM, X-ray photoelectron spectroscopy and X-ray diffraction confirm uniform Pt nanoparticles of ~2.8 nm with strong metal–support interactions. The catalyst achieves high yields and maintains ≥95 % conversion after three successive cycles, demonstrating exceptional stability and reusability for fine-chemical production.

Selective Catalytic Oxidation of Alcohols publication trend

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

Technical terms

Aerobic oxidation: Oxidation employing molecular oxygen as the terminal oxidant.

Heterogeneous catalyst: A solid catalyst that facilitates reactions of liquid or gas substrates without dissolving into the reaction medium.

Bimetallic catalyst: A catalyst composed of two different metals that interact synergistically to alter activity, selectivity or stability.

Cooperative redox enhancement (CORE): A catalytic effect arising when dehydrogenation and oxygen-reduction steps occur at separate active sites linked by electron transport.

Turnover frequency (TOF): The number of substrate molecules converted per active site per unit time, indicating intrinsic catalyst activity.

References

1. Insights into the Effect of Metal Ratio on Cooperative Redox Enhancement Effects over Au- and Pd-Mediated Alcohol Oxidation. ACS Catalysis (2023).
2. Enhanced Selective Oxidation of Benzyl Alcohol via In Situ H2O2 Production over Supported Pd-Based Catalysts. ACS Catalysis (2021).
3. Oxidation of Benzyl Alcohol Compounds in the Presence of Carbon Hybrid Supported Platinum Nanoparticles (Pt@CHs) in Oxygen Atmosphere. Scientific Reports (2020).