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.
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This work was supported partially by projects CEEX 23/2006, CEEX III 2/2005 and CEEX 42/2005.
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Barau, A., Budarin, V., Caragheorgheopol, A. et al. A Simple and Efficient Route to Active and Dispersed Silica Supported Palladium Nanoparticles. Catal Lett 124, 204–214 (2008). https://doi.org/10.1007/s10562-008-9465-x
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DOI: https://doi.org/10.1007/s10562-008-9465-x