Catalysis Letters

, Volume 116, Issue 3, pp 128–135

Rational design of gold catalysts with enhanced thermal stability: post modification of Au/TiO2 by amorphous SiO2 decoration

  • Haoguo Zhu
  • Zhen Ma
  • Steven H. Overbury
  • Sheng Dai
Article

DOI: 10.1007/s10562-007-9144-3

Cite this article as:
Zhu, H., Ma, Z., Overbury, S.H. et al. Catal Lett (2007) 116: 128. doi:10.1007/s10562-007-9144-3

Abstract

Au/TiO2 is highly active for CO oxidation, but it often suffers from sintering in high-temperature environments. In this work, we report on a novel design of gold catalysts, in which pre-formed Au/TiO2 catalysts were post decorated by amorphous SiO2 to suppress the agglomeration of gold particles. Even after being aged in O2–He at 700 °C, the SiO2-decorated Au/TiO2 was still active for CO oxidation at ambient temperature.

Keywords

gold nanoparticlesCO oxidationpromotionsinteringalkoxysilanespost decoration

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Haoguo Zhu
    • 1
  • Zhen Ma
    • 1
  • Steven H. Overbury
    • 1
  • Sheng Dai
    • 1
  1. 1.Chemical Sciences Division and Center for Nanophase Materials SciencesOak Ridge National LaboratoryOak RidgeUSA