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Catalysis Letters

, Volume 124, Issue 3–4, pp 204–214 | Cite as

A Simple and Efficient Route to Active and Dispersed Silica Supported Palladium Nanoparticles

  • Alexandra Barau
  • Vitaly Budarin
  • Agneta Caragheorgheopol
  • Rafael Luque
  • Duncan J. Macquarrie
  • Ambra Prelle
  • Valentin S. Teodorescu
  • Maria Zaharescu
Article

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.

Keywords

Mesoporous silica Pd nanoparticles Heterogenous catalysis Heck reaction 

Notes

Acknowledgments

This work was supported partially by projects CEEX 23/2006, CEEX III 2/2005 and CEEX 42/2005.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Alexandra Barau
    • 1
  • Vitaly Budarin
    • 2
  • Agneta Caragheorgheopol
    • 1
  • Rafael Luque
    • 2
  • Duncan J. Macquarrie
    • 2
  • Ambra Prelle
    • 2
  • Valentin S. Teodorescu
    • 3
  • Maria Zaharescu
    • 1
  1. 1.Institute of Physical Chemistry “Ilie Murgulescu” – Roumanian AcademyBucharestRomania
  2. 2.Green Chemistry Centre of ExcellenceThe University of YorkHeslington, YorkUK
  3. 3.National Institute of Material PhysicsBucharest-MagureleRomania

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