Abstract
Various mesoporous silica supported Pd materials were prepared by different methodologies in order to control and optimize the metal nanoparticle sizes for catalytic applications. The catalytic activities (conversion, mol% and selectivity to methyl-cinnamate) of the supported palladium catalysts were investigated in the Heck reaction under microwave irradiation using various haloarenes. Pd materials prepared by co-precipitation exhibited a very poor activity in the Heck reaction compared to that of Pd impregnated samples. Impregnated materials prepared without the use of a specific reducing agent had comparable activities to those of APTS-NaBH4 reduced Pd materials, validating the simplicity of the methodology. High selectivities to methylcinnamate were obtained for all materials.
Original language | English |
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Pages (from-to) | 204-214 |
Number of pages | 11 |
Journal | Catalysis Letters |
Volume | 124 |
Issue number | 3-4 |
DOIs | |
Publication status | Published - Aug 2008 |
Keywords
- mesoporous silica
- Pd nanoparticles
- heterogenous catalysis
- Heck reaction
- CROSS-COUPLING REACTIONS
- HECK REACTIONS
- PD NANOPARTICLES
- MESOPOROUS ORGANOSILICAS
- AEROBIC OXIDATION
- CATALYST
- HYDROGENATION
- PD/SIO2
- SBA-15
- SUZUKI