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.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
A.T. Ashcroft, A.K. Cheetham, M.L.H. Green and P.D.F. Vernon, Nature 352 (1991) 225.
J.S.H.Q. Perera, J.W. Couves, G. Sankar and J.M. Thomas, Catal. Lett. 11 (1991) 219.
A.T. Ashcroft, A.K. Cheetham, R.H. Jones, S. Natarajan, J.M. Thomas, D. Waller and S.M. Clark, J. Phys. Chem. 97 (1993) 3355.
R. Srinivasan and R. De Angelis, J. Mater. Res. 1 (1986) 583.
R. Srinivasan, L. Rice and B.H. Davis, J. Am. Ceram. Soc. 73 (1990) 3528.
M.M. Ibrahim, J. Zhao and M.S. Seehra, J. Mater. Res. 7 (1992) 1856.
S. Galvagno, G. Capannelli, G. Neri, A. Donato and R. Pietropaolo, J. Mol. Catal. 64 (1991) 237.
V.R. Pradhan, J.W. Tierney and I. Wender, Energy and Fuels 5 (1991) 497.
B.S. Clausen and H. Topsøe, Catal. Today 9 (1991) 189.
G. Sankar, J.M. Thomas, D. Waller, J.W. Couves, C.R.A. Catlow and G.N. Greaves, J. Phys. Chem. 96 (1992) 7485.
G. Apai, J.F. Hamilton, J. Stohr and A. Thompson, Phys. Rev. Lett. 43 (1979) 165.
R.H. Jones, A.T. Ashcroft, D. Waller, A.K. Cheetham and J.M. Thomas, Catal. Lett. 8 (1991) 169.
A.T. Ashcroft, A.K. Cheetham, R.H. Jones, S. Natarajan, J.M. Thomas and D. Waller,Catalysis and Surface Characterisation, Special Publ. Roy. Soc. Chem. 114 (1992) 184.
A.R. Stokes and A.J.C. Wilson, Proc. Camb. Phil. Soc. 38 (1942) 313.
M. Che and C.O. Bennett, Adv. Catal. 36 (1989) 55.
R.B. Greegor and F.W. Lytle, J. Catal. 63 (1980) 476.
P.A. Lee, P.H. Citrin, P. Eisenberger and B.M. Kincaid, Rev. Mod. Phys. 53 (1981) 769.
B.S. Clausen, L. Grabaek, H. Topsøe, L.B. Hansen, P. Stoltze and J.K. Norskov, J. Catal. 141 (1993) 368.
P.J.F. Harris, E.D. Boyes and J.A. Cairns, J. Catal. 82 (1983) 127.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
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
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00807374