Rational design of gold catalysts with enhanced thermal stability: post modification of Au/TiO2 by amorphous SiO2 decoration
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- Zhu, H., Ma, Z., Overbury, S.H. et al. Catal Lett (2007) 116: 128. doi:10.1007/s10562-007-9144-3
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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.