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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
Author(s) -
SánchezResa Daniel,
Delgado Jorge A.,
FernándezMartínez Maria Dolores,
Didelot Chloé,
De Mallmann Aimery,
Szeto Kaï C.,
Taoufik Mostafa,
Claver Carmen,
Godard Cyril
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202100806
Subject(s) - bimetallic strip , nanomaterial based catalyst , catalysis , chemistry , phosphine , alkyl , reactivity (psychology) , metal , triphenylphosphine , nanoparticle , particle size , selectivity , carbon nanotube , heterogeneous catalysis , chemical engineering , inorganic chemistry , organic chemistry , medicine , alternative medicine , pathology , engineering
Triphenylphosphine stabilized Pd, Cu and PdCu nanocatalysts supported on carbon nanotubes (CNTs) or phosphorus functionalised silica (P−SiO 2 ) were prepared via a one‐pot methodology. The series of P−SiO 2 supported catalysts evidenced metal particle 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−SiO 2 support. The series of supported catalysts were tested in the semi‐hydrogenation of alkynes providing differences in reactivity which might be correlated with the size and composition of 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.