| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 40237 | Applied Catalysis A: General | 2013 | 9 Pages |
•New PdNPs on carbon materials nanocatalysts were prepared and fully characterized.•The nanocatalysts were found to be highly active in the Suzuki coupling reaction.•The hybrid systems were re-used up to 10 times without any loss of activity in PEG.•Reaction media was found to influence strongly the re-use of the nanocatalysts.
Three new hybrid nanocatalysts based on carbon-supported Pd nanoparticles (NPs) were prepared by decomposition of an organometallic palladium precursor under H2 atmosphere in the presence of carbon materials with different surface and textural properties. The so-obtained Pd NPs displayed mean sizes in the range of 2–2.5 nm. The hybrid nanocatalysts were evaluated in the aqueous Suzuki–Miyaura cross-coupling reaction under both conventional and microwave heating. Excellent activities were obtained at short reaction times (5–10 min) reaching TOF values up to 3000 h−1 under microwave radiation. Recycling studies showed that the nanocatalysts could be re-used up to 10 (conventional heating) and to 5 (microwave irradiation) reaction cycles without any loss of activity. The reaction media was found to have a strong influence on the recyclability of the nanocatalysts, which could be improved in the presence of polyethylene glycol.
Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (205 K)Download as PowerPoint slide
