PROX Activity Over Gold-Ceria Catalysts

No substantial differences in size distribution and the average size of the nano-gold particles in the studied catalysts were observed. The main reason for the differences in PROX activity was 

The results presented in this chapter on the preparation, characterization, and WGS and PROX activities of gold catalysts based on 

The authors gratefully acknowledge the financial support of COST Action D 36/003 and CM 0903/02. 

Thompson, D.T., Catalysis by Gold, Imperial College Press, London, (2006). 

Sakurai, H., Ueda, A., Kobayashi, T., Haruta, M., Chem. Commun., 

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Andreeva et al. observed higher WGS activity also over gold catalysts on ceria modified with RE (RE=Y, La, Sm, Gd, or Yb) prepared by MA compared to the corresponding GP-prepared gold catalysts. No distinct correlation between reducibility and WGS activity was established in this case. In contrast, for the same two series of catalysts, the gold catalysts prepared by GP performed better in PROX than those synthesized by MA. At the relatively low temperatures of the PROX reaction, surface oxygen vacancies play a major role and their generation is enhanced by the lower temperature reducibility of the GP samples (see Fig. 10.6). 

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