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

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 catalysts evidenced metal particle sizes metallic nanoparticles (M-NPs) between 1 2.4 nm, smaller than their equivalents CNTs (2.4–2.6 nm). Such difference in size as function the support composition indicated more pronounced mediation during formation M-NPs when compared to support. tested semi-hydrogenation alkynes providing differences reactivity which might be correlated with nature corresponding displayed general higher activities those bimetallic catalyst PdCu/CNTs most selective for case alkyl substituted alkynes. This could moreover recycled several times without loss activity nor selectivity.