TY - JOUR
T1 - Efficient and recyclable carbon-supported Pd nanocatalysts for the Suzuki-Miyaura reaction in aqueous-based media
T2 - Microwave vs conventional heating
AU - García-Suárez, Eduardo J.
AU - Lara, Patricia
AU - García, Ana B.
AU - Ojeda, Manuel
AU - Luque, Rafael
AU - Philippot, Karine
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
KW - Carbon materials
KW - Heterogeneous catalysts
KW - Microwave heating
KW - Palladium nanoparticles
KW - Suzuki cross-coupling
UR - https://www.scopus.com/pages/publications/84883643603
U2 - 10.1016/j.apcata.2013.08.036
DO - 10.1016/j.apcata.2013.08.036
M3 - Article
AN - SCOPUS:84883643603
SN - 0926-860X
VL - 468
SP - 59
EP - 67
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -