Catalysis Letters

, Volume 143, Issue 8, pp 763–771 | Cite as

Nitrobenzene Hydrogenation on Au/TiO2 and Au/SiO2 Catalyst: Synthesis, Characterization and Catalytic Activity

  • Cecilia Torres
  • Cristian Campos
  • José Luis García Fierro
  • Marcelo Oportus
  • Patricio Reyes


Recently, gold has been proposed as an active phase for the hydrogenation of nitro-arenes. This metal has been rarely used in hydrogenation reactions because gold does not possess hydrogen chemisorption capacity. However, small gold particles behave differently and they may be able to chemisorb hydrogen to same extent, leading to possible activity in hydrogenation reactions. This may provide an advantage because the reactions catalyzed by highly dispersed gold particles may be better controlled. In this work, TiO2 and SiO2 supported Au catalysts were prepared by the deposition–precipitation method using urea and NaOH to precipitate the metallic component at different temperatures and hydrogen pressures. The metal loading for all the catalysts was 1 wt%. The catalysts were characterized by X-ray diffraction, high resolution transmission electron microscopy among others. The catalysts were then evaluated in the hydrogenation of nitrobenzene in a batch type reactor at 25 °C. All the catalysts were active in the hydrogenation reaction and the major obtained product was aniline.

Graphical Abstract


Gold Nitrobenzene Hydrogenation Heterogeneous 



The authors thank the Project FONDECYT 1100259 for funding this research. C. Torres and C. Campos are grateful to CONICYT for their doctoral Fellowship. We also thanks to REDOC.CTA Universidad de Concepción.


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  1. 1.Grupo de Catálisis por Metales, Facultad de Ciencias QuímicasUniversidad de ConcepciónConcepciónChile
  2. 2.Grupo de Energía y Química Sostenible (EQS)Instituto de Catálisis y Petroleoquímica (ICP-CSIC)MadridSpain

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