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Particle size studies of supported metal catalysts: a comparative study by X-ray diffraction, EXAFS and electron microscopy

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Abstract

Supported ruthenium and iridium metal catalysts are studied by X-ray diffraction (XRD), EXAFS analysis and transmission electron microscopy (TEM). Estimates of the mean particle size from these techniques range from 20 to 25 Å from XRD, 13 to 16 Å from EXAFS and 25 to 32 Å from TEM. The strengths and weaknesses of these instrumental methods are discussed, as is the intrinsic comparability of these techniques. From a combination of these methods, the average particle size is estimated to be of the order of 20–30 Å.

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Authors and Affiliations

  1. Materials Department, University of California, 93106, Santa Barbara, CA, USA

    A. T. Ashcroft & A. K. Cheetham

  2. Chemical Crystallography Laboratory, 9 Parks Road, OX1 3PD, Oxford, UK

    P. J. F. Harris & N. J. Stedman

  3. Davy Faraday Laboratory, Royal Institution, 21 Albemarle St., W1 4BX, London, UK

    R. H. Jones, S. Natarajan, G. Sankar & J. M. Thomas

  4. Department of Chemistry, University of Keele, ST5 5BG, Keele, Staffordshire, UK

    R. H. Jones

Authors
  1. A. T. Ashcroft
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  2. A. K. Cheetham
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  3. P. J. F. Harris
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  4. R. H. Jones
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  5. S. Natarajan
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  6. G. Sankar
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  7. N. J. Stedman
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  8. J. M. Thomas
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Ashcroft, A.T., Cheetham, A.K., Harris, P.J.F. et al. Particle size studies of supported metal catalysts: a comparative study by X-ray diffraction, EXAFS and electron microscopy. Catal Lett 24, 47–57 (1994). https://doi.org/10.1007/BF00807374

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  • DOI: https://doi.org/10.1007/BF00807374

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