Pd, Cu and Bimetallic PdCu NPs Supported on CNTs and Phosphine‐Functionalized Silica: One‐Pot Preparation, Characterization and Testing in the Semi‐Hydrogenation of Alkynes - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue European Journal of Inorganic Chemistry Année : 2021

Pd, Cu and Bimetallic PdCu NPs Supported on CNTs and Phosphine‐Functionalized Silica: One‐Pot Preparation, Characterization and Testing in the Semi‐Hydrogenation of Alkynes

Résumé

Triphenylphosphine stabilized Pd, Cu and PdCu nanocatalysts supported on carbon nanotubes (CNTs) or phosphorus functionalised silica (P-SiO2) were prepared via a one-pot methodology. The series of P-SiO2 supported catalysts evidenced sizes of metallic nanoparticles (M-NPs) between 1 and 2.4 nm, smaller than their equivalents on CNTs (2.4-2.6 nm). Such a difference in particle size as a function of the support and the metallic composition indicated the more pronounced mediation of the CNTs support during the formation of the M-NPs when compared to the P-SiO2 support. The series of supported catalysts were tested in the semihydrogenation of alkynes providing differences in reactivity that might be correlated with the size and composition the M-NPs and the nature of corresponding support. The carbon supported catalysts displayed in general higher activities than those supported on silica and the bimetallic catalyst PdCu/CNTs were the most selective for the case of alkyl substituted alkynes. This catalyst could moreover be recycled several times without loss of activity nor selectivity.
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hal-03759541 , version 1 (24-08-2022)

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Daniel Sánchez-Resa, Jorge Delgado, Maria Dolores Fernández-Martínez, Chloé Didelot, Aimery de Mallmann, et al.. Pd, Cu and Bimetallic PdCu NPs Supported on CNTs and Phosphine‐Functionalized Silica: One‐Pot Preparation, Characterization and Testing in the Semi‐Hydrogenation of Alkynes. European Journal of Inorganic Chemistry, 2021, 2021 (47), pp.4970-4978. ⟨10.1002/ejic.202100806⟩. ⟨hal-03759541⟩
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