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


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1996-03

AUTHORS

Youzhu Yuan, Kiyotaka Asakura, Huilin Wan, Khirui Tsai, Yasuhiro Iwasawa

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. More... »

PAGES

15-20

References to SciGraph publications

  • 1983-12. Catalytic gold in GOLD BULLETIN
  • 1993-09. Low temperature CO oxidation over Au/TiO2 and Au/SiO2 catalysts in CATALYSIS LETTERS
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1007/bf00814461

    DOI

    http://dx.doi.org/10.1007/bf00814461

    DIMENSIONS

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