Abstract
The anchoring and decomposition mechanisms of platinum(II) bis-acetylacetonate on alumina surfaces are studied by X-ray absorption spectroscopy at the platinum LIII edge. A distinction is made between highly reactive surfaces which are partially dehydroxylated and exhibit coordinatively unsaturated surface sites, and deactivated surfaces which are covered by a monolayer of OH groups. The samples are studied after three stages of a wet impregnation synthesis: after drying at room temperature, drying at 120 °C and calcination at 350 °C. The XANES signal and the filtered EXAFS signals of the first and second coordination shells around platinum were analyzed. Two different mechanisms are discussed for the two types of supports.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
J. Berdala, E. Freund and J. P. Lynch, J. Physique 47 (1986) C8-269.
B. Shelimov, J. F. Lambert, M. Che and B. Didillon, J. Catal. 185 (1999) 462.
J. Berdala, E. Freund and J. P. Lynch, J. Physique (1986) C8-265.
E. Lesage-Rosenberg, G. Vlaic, H. Dexpert, P. Lagarde and E. Freund, Appl. Catal. 22 (1986) 211.
M. Lindblad, L. P. Lindfors and T. Suntola, Catal. Lett. 27 (1994) 323.
J. C. Kenvin, M. G. White and M. B. Mitchell, Langmuir 7 (1991) 1198.
J. C. Kenvin and M. G. White, J. Catal. 130 (1991) 447.
M. B. Mitchell, V. R. Chakravarthy and M. G. White, Langmuir 10 (1994) 4523.
J. A. R. van Veen, G. Jonkers and W. H. Hesselink, J. Chem. Soc. Faraday Trans. I 85 (1989) 389.
J. B. Peri, J. Phys. Chem. 69 (1965) 220.
H. Knozinger and P. Ratnasamy, Catal. Rev. Sci. Eng. 17 (1978) 31.
H. Knozinger, Adv. Catal. 25 (1976) 184.
F. W. Lytle, J. Catal. 43 (1976) 376.
F. W. Lytle, P. S. P. Wei, R. B. Greegor, G. H. Via and J. H. Sinfelt, J. Chem. Phys. 70 (1979) 4849.
D. C. Koningsberger and R. Prins (eds.), X-ray Absorption: Principles, Applications, Techniques of Exafs, Sexafs and Xanes (Wiley, 1988).
Y. Iwasawa (ed.), Xas for Catalysts and Surfaces (World Scientific, Singapore, 1995).
G. Sankar and J. M. Thomas, Topics Catal. 8 (1999) 1.
D. Bazin and L. Guczi, Recent Res. Devel. Phys. Chem. 3 (1999) 387.
D. Bazin, H. Dexpert, P. Lagarde and J. Bournonville, J. Catal. 123 (1988) 86.
A. Michalowicz, J. Phys. IV C2–7 (1997) 235.
S. Onuma, K. Horioka, H. Inoue and S. Shibata, Bull. Chem. Soc. Jpn. 53 (1980) 2679.
S. M. Hunter, in: EXAFS Spectroscopy, eds. B. K. Teo and D. C. Joy (Plenum Press, New York, 1981), p. 163.
J. J. Rehr, S. I. Zabinsky and R. C. Albers, Phys. Rev. Lett. 69 (1992) 3397.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Womes, M., Lynch, J., Bazin, D. et al. Interaction Between Pt(acac)2 and Alumina Surfaces Studied by XAS. Catalysis Letters 85, 25–31 (2003). https://doi.org/10.1023/A:1022108521955
Issue Date:
DOI: https://doi.org/10.1023/A:1022108521955