Catalytic Hydrogenation of Oxygenates

The catalytic hydrogenation of oxygenates encompasses a suite of reactions that convert oxygen-containing organic compounds into value-added chemicals and fuels by adding hydrogen across carbon–oxygen and carbon–carbon bonds. Central challenges include controlling selectivity among multiple reduction pathways, preserving catalyst stability under high-pressure hydrogen environments and maximising active-site availability. Copper-, nickel- and silver-based catalysts supported on oxides such as SiO₂ or carbon substrates dominate investigations into the hydrogenation of esters, acids, aldehydes and unsaturated bonds in biomass-derived feedstocks. Recent advances have centred on tuning the metal–support interaction, engineering promoters to enhance dispersion and exploring confinement effects in nanostructured supports to suppress sintering. Such refinements have delivered improved activity and longevity for processes ranging from the synthesis of ethylene glycol and ethanol to the selective hydrogenation of alkynes and carbonyls, underscoring the potential for sustainable production routes in fine chemicals, fuels and pharmaceuticals.

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Catalytic Hydrogenation of Oxygenates publication trend

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

Technical terms

Oxygenates: Organic molecules containing one or more oxygen functional groups such as alcohols, esters and carbonyls.

Catalytic hydrogenation: A catalytic process in which molecular hydrogen is added to unsaturated bonds in organic substrates under controlled conditions.

Support: An inert or structured material (e.g. SiO₂, Al₂O₃) on which active metal species are dispersed to enhance stability and dispersion.

Dispersion: The fraction of catalytic metal atoms exposed at the surface relative to the total metal loading, influencing activity.

Sintering: The agglomeration of metal nanoparticles into larger particles at elevated temperatures, leading to loss of active surface area.

Selectivity: The preference of a catalytic reaction to produce a desired product over undesired pathways, often expressed as a percentage.

References

1. Ni-Modified Ag/SiO2 Catalysts for Selective Hydrogenation of Dimethyl Oxalate to Methyl Glycolate. Nanomaterials (2022).
2. Microwave Synthesis of Copper Phyllosilicates as Effective Catalysts for Hydrogenation of C≡C Bonds. Molecules (2022).
3. Cu-Based Catalysts with Enhanced Thermal Stability for Cyclohexyl Acetate Hydrogenation: Studies on Cu+ and Cu0 Sites at Different Reduction Temperatures. Catalysts (2023).