Preparation of Pd Nanoparticles Supported on Activated Carbon via Glow Discharge Plasma and Their Catalytic Properties for Suzuki Coupling Reactions

Abstract

Palladium nanoparticles supported on activated carbon were prepared by N2 glow discharge plasma reduction (PdNPs/C-P) and a chemical reduction method using l-ascorbic acid as the reducing agent (PdNPs/C-V). PdNPs/C-P have a smaller particle size and higher metal dispersion than PdNPs/C-V. PdNPs/C-P afforded a 98% yield for the Suzuki coupling reaction of 4-bromotoluene with phenylboronic acid at a very low loading of Pd (0.5 mmol ‰ Pd) and could be reused five times without an obvious reduction in catalytic activity.