Isolated PdO sites on SiO<sub>2</sub>-supported NiO nanoparticles as active sites for allylic alcohol selective oxidation

Ziarko, Aleksandra; Slater, Thomas J. A.; Isaacs, Mark A.; Durndell, Lee J.; Parlett, Christopher M. A.

doi:10.1039/d3cy00198a

Catal. Sci. Technol.

2023

DOI: 10.1039/d3cy00198a

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Isolated PdO sites on SiO₂-supported NiO nanoparticles as active sites for allylic alcohol selective oxidation

Aleksandra Ziarko,

Thomas J. A. Slater,

Mark A. Isaacs

et al.

Abstract: Catalytic allylic alcohol oxidation to aldehydes is an industrial process that necessitates chemoselectivity. Surface PdO (on Pd) enables this transformation but does not represent optimal metal utilisation. Here we report...

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2024

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Cited by 2 publications

References 41 publications

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Impact of Ceria Support Morphology on Au Single‐Atom Catalysts for Benzyl Alcohol Selective Oxidation

Zhou,

Mavridis,

Isaacs

et al. 2024

ChemCatChem

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Alcohol oxidations are a key industrial chemical transformation, with aldehydes and ketones finding use in an array of applications. Nobel metals are known for their activity towards this chemoselective transformation, however, sustainable catalyst synthesis requires optimal utilisation of these scarce elements. Here, we report Au catalytic systems based on the deposition of isolated Au sites on different morphologies of ceria in which different surface facets of the support are exposed. Through tailoring the support morphology and from extensive catalyst characterisation, it is shown that the exposed facet is critical for controlling the formation (or not) of isolated Au sites. Both the 110 and 111 facets are capable of this feat, yielding single‐atom sites for rod, octahedron, and polyhedron morphologies. In contrast, the 100 facet is not, resulting in Au nanoparticles on cubic ceria. This dictation over Au species is critical to benzyl alcohol oxidation capacity at mild conditions and in the absence of a soluble base, with only single‐atom catalyst (SAC) systems demonstrating activity. Furthermore, the exposed surface facet also governs the degree of surface oxygen vacancies, which is critical to catalyst activity and arises from its control over substrate adsorption strength, as revealed through T1/T2 NMR relaxation measurements.

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Impact of Ceria Support Morphology on Au Single‐Atom Catalysts for Benzyl Alcohol Selective Oxidation

Zhou,

Mavridis,

Isaacs

et al. 2024

ChemCatChem

Self Cite

View full text Add to dashboard Cite

show abstract

Surface adsorbed–H2O promoted aerobic oxidation of biomass–derived alcohols on MnO catalysts

Zhang,

Wang,

Niu

et al. 2024

Chemical Engineering Journal

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Isolated PdO sites on SiO₂-supported NiO nanoparticles as active sites for allylic alcohol selective oxidation

Abstract: Catalytic allylic alcohol oxidation to aldehydes is an industrial process that necessitates chemoselectivity. Surface PdO (on Pd) enables this transformation but does not represent optimal metal utilisation. Here we report...

Cited by 2 publications

References 41 publications

Impact of Ceria Support Morphology on Au Single‐Atom Catalysts for Benzyl Alcohol Selective Oxidation

Impact of Ceria Support Morphology on Au Single‐Atom Catalysts for Benzyl Alcohol Selective Oxidation

Surface adsorbed–H2O promoted aerobic oxidation of biomass–derived alcohols on MnO catalysts

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Isolated PdO sites on SiO2-supported NiO nanoparticles as active sites for allylic alcohol selective oxidation

Abstract: Catalytic allylic alcohol oxidation to aldehydes is an industrial process that necessitates chemoselectivity. Surface PdO (on Pd) enables this transformation but does not represent optimal metal utilisation. Here we report...

Cited by 2 publications

References 41 publications

Impact of Ceria Support Morphology on Au Single‐Atom Catalysts for Benzyl Alcohol Selective Oxidation

Impact of Ceria Support Morphology on Au Single‐Atom Catalysts for Benzyl Alcohol Selective Oxidation

Surface adsorbed–H2O promoted aerobic oxidation of biomass–derived alcohols on MnO catalysts

Contact Info

Product

Resources

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Isolated PdO sites on SiO₂-supported NiO nanoparticles as active sites for allylic alcohol selective oxidation