Controlling the selectivity of bimetallic platinum-ruthenium nanoparticles supported on N-doped graphene by adjusting their metal composition

Mono and bimetallic platinum-ruthenium nanoparticles have been generated on N-doped graphene (NH 2 -rGO) following an organometallic approach. Surface and structural studies confirmed the formation of bimetallic MNPs with controlled metal compositions. To evaluate the activity/selectivity of the dif...

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Published in:Catalysis science & technology 2021-02, Vol.11 (2), p.494-55
Main Authors: Cerezo-Navarrete, Christian, Mathieu, Yannick, Puche, Marta, Morales, Cristina, Concepción, Patricia, Martínez-Prieto, Luis M, Corma, Avelino
Format: Article
Language:English
Subjects:
Acetophenone
Aromatic compounds
Benzaldehyde
Bimetals
Composition
Graphene
Hydrogenation
Hydroxymethylfurfural
Nanoparticles
Nitrobenzene
Platinum
Ruthenium
Selectivity
Substrates
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Summary:Mono and bimetallic platinum-ruthenium nanoparticles have been generated on N-doped graphene (NH 2 -rGO) following an organometallic approach. Surface and structural studies confirmed the formation of bimetallic MNPs with controlled metal compositions. To evaluate the activity/selectivity of the different materials prepared we used the hydrogenation of acetophenone as a model reaction. We found that both the activity and selectivity of the supported-bimetallic NPs are highly dependent on the support and the atomic composition. The higher the Pt/Ru ratio, the higher the selectivity towards 1-phenylethanol. Indeed, a remarkable activity and selectivity in the hydrogenation of acetophenone was observed for Pt 5 Ru 1 @NH 2 -rGO. The reactivity of these catalysts was also investigated in the hydrogenation of other substrates such as functionalized arenes ( i.e. nitrobenzene and benzaldehyde) or hydroxymethylfurfural (HMF), demonstrating that it is possible to control the activity and selectivity of bimetallic Pt-Ru MNPs supported on N-doped graphene by adjusting their metal composition. Bimetallic platinum-ruthenium nanoparticles supported on N-doped graphene as chemoselective hydrogenation catalysts.
ISSN:2044-4753
2044-4761
DOI:10.1039/d0cy02379e