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Efficient and recyclable carbon-supported Pd nanocatalysts for the Suzuki–Miyaura reaction in aqueous-based media: Microwave vs conventional heating

Paper ID Volume ID Publish Year Pages File Format Full-Text
40237 45848 2013 9 PDF Available
Title
Efficient and recyclable carbon-supported Pd nanocatalysts for the Suzuki–Miyaura reaction in aqueous-based media: Microwave vs conventional heating
Abstract

•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.

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Keywords
Palladium nanoparticles; Heterogeneous catalysts; Microwave heating; Suzuki cross-coupling; Carbon materials
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Efficient and recyclable carbon-supported Pd nanocatalysts for the Suzuki–Miyaura reaction in aqueous-based media: Microwave vs conventional heating
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 468, 5 November 2013, Pages 59–67
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us