Nanoparticle Catalysis in Hydrogenation Reactions

Nanoparticle catalysts have emerged as a transformative class of materials in hydrogenation chemistry, combining high surface‐to‐volume ratios with tunable electronic and geometric properties. By adjusting particle size, shape and composition, researchers have achieved remarkable gains in activity and selectivity for the reduction of alkenes, alkynes, carbonyls and other unsaturated bonds. Surface ligands, supports and core–shell architectures further refine catalytic performance, enabling heterolytic and homolytic activation pathways of dihydrogen under mild conditions. Aqueous biphasic systems, in which metal nanoparticles are confined within amphiphilic micelles or immobilised on functionalised supports, offer practical advantages in catalyst recovery and recyclability. These advances have led to enhanced turnover frequencies, often exceeding 10^4 h^–1 on precious‐metal sites, and have opened routes to sustainable fine‐chemical synthesis, biomass upgrading and green fuel production. The interplay between ligand design, support engineering and mechanistic insight continues to drive the global relevance of nanoparticle‐mediated hydrogenation.

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Nanoparticle Catalysis in Hydrogenation Reactions publication trend

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

Technical terms

Nanoparticle catalyst: A metal or metal‐based particle with at least one dimension below 100 nm, offering high surface area and quantum effects for enhanced catalytic activity.

Hydrogenation reaction: A chemical transformation in which molecular hydrogen is added across unsaturated bonds (e.g., C=C, C=O) to yield saturated products.

Turnover frequency (TOF): A measure of catalytic activity defined as the number of substrate molecules converted per active site per unit time.

Core‐crosslinked micelle (CCM): A nanoscale assembly in which polymer chains form a crosslinked inner core, stabilising encapsulated catalysts and facilitating biphasic reactions.

Heterolytic cleavage: The splitting of a diatomic molecule (such as H2) into a proton (H+) and a hydride (H–) at a catalytic interface, often mediated by cooperative ligand–metal interactions.

References

1. Confinement of Rh nanoparticles in triphenylphosphine oxide-functionalized core-crosslinked micelles for aqueous biphasic hydrogenation catalysis. Materials Today Chemistry (2023).
2. Heterolytic cleavage of dihydrogen (HCD) in metal nanoparticle catalysis. Catalysis Science & Technology (2021).
3. Zwitterionic amidinates as effective ligands for platinum nanoparticle hydrogenation catalysts. Chemical Science (2017).