Catalysis Letters

, Volume 42, Issue 1, pp 15–20

Preparation of supported gold catalysts from gold complexes and their catalytic activities for CO oxidation

Authors

  • Youzhu Yuan
    • Department of Chemistry, Graduate School of ScienceThe University of Tokyo
    • Department of Chemistry and State Key Laboratory for Physical Chemistry of the Solid SurfaceXiamen University
  • Kiyotaka Asakura
    • Research Center for Spectrochemistry, Faculty of ScienceThe University of Tokyo
  • Huilin Wan
    • Department of Chemistry and State Key Laboratory for Physical Chemistry of the Solid SurfaceXiamen University
  • Khirui Tsai
    • Department of Chemistry and State Key Laboratory for Physical Chemistry of the Solid SurfaceXiamen University
  • Yasuhiro Iwasawa
    • Department of Chemistry, Graduate School of ScienceThe University of Tokyo
Article

DOI: 10.1007/BF00814461

Cite this article as:
Yuan, Y., Asakura, K., Wan, H. et al. Catal Lett (1996) 42: 15. doi:10.1007/BF00814461

Abstract

A phosphine-stabilized mononuclear gold complex Au(PPh3)(NO3) (1) and a phosphine-stabilized gold cluster [Aug(PPh3)8](NO3)3 (2) were used as precursors for preparation of supported gold catalysts. Both complexes 1 and 2 supported on inorganic oxides such as α-Fe2O3, TiO2, and SiO2 were inactive for CO oxidation, whereas the 1 or 2/ oxides treated under air or CO or 5% h2/Ar atmosphere were found to be active for CO oxidation. The catalytic activity depended on not only the treatment conditions but also the kinds of the precursor and the supports used. The catalysts derived from 1 showed higher activity than those derived from 2. α-Fe2O3 and TiO2 were much more efficient supports than SiO2 for the gold particles which were characterized by XRD and EXAFS.

Keywords

supported gold catalystsCO oxidationgold monomer and clusterEXAFS

Copyright information

© J.C. Baltzer AG, Science Publishers 1996