Abstract
EXAFS and XANES data show that platinum, present in a Pt-SO4-ZrO2 catalyst, exists in the metallic state following calcination in air at 725°C for 2 h, and that no detectable change in the valence state of Pt occurs during use of the catalyst for hydrocarbon conversion at 150°C under hydrogen pressure. The metallic Pt is present in reasonably large crystals where the average coordination number of Pt is about 12.
Similar content being viewed by others
References
M.Y. Wen, I. Wender and J.W. Tierney, Energy & Fuels 4 (1990) 372.
T. Hosoi, T. Shimadzu, S. Itoh, S. Baba, H. Takaoka, T. Imai and N. Yokoyama, ACS Div. Petrol. Chem. Preprints 33 (1988) 562.
B.H. Davis, R.A. Keogh and R. Srinivasan, Catal. Today, submitted.
K. Ebitani, J. Konishi and H. Hattori. J. Catal. 130 (1991) 257.
K. Ebitani, J. Tsuji, H. Hattori and H. Kita, J. Catal. 135 (1992) 609.
R.A. Keogh, D. Sparks, R. Srinivasan and B.H. Davis,Proc. Liquefaction Contractor's Review Meeting, eds. G.J. Stiegel and R.D. Srivastava (US DOE, Pittsburgh, PA, 1992).
E. Iglesia, Seminar, CAER, 23 February 1993.
K. Ebitani, H. Konno, T. Tanaka and H. Hattori, J. Catal. 135 (1992) 60.
A. Sayari and A. Dicko, J. Catal., submitted; personal communication.
B.H. Davis, J. Am. Ceram. Soc. 67 (1984) C-168.
R. Srinivasan and B.H. Davis, ACS Div. Petrol. Chem. 36 (1991).
B.-K. Teo and P.A. Lee, J. Am. Chem. Soc. 101 (1979) 2815.
R.B. Greegor and F.W. Lytle, J. Catal. 63 (1980) 476.
G.H. Via, J.H. Sinfelt and F.W. Lytle, J. Chem. Phys. 71 (1979) 690.
R. Srinivasan and B.H. Davis, unpublished.
P. Lööf, B. Kasemo, L. Björnkvist, S. Anderson and A. Frestad, Stud. Surf. Sci. Catal. 71 (1991) 253.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Zhao, J., Huffman, G.P. & Davis, B.H. XAFS study of the state of platinum in a sulfated zirconia catalyst. Catal Lett 24, 385–389 (1994). https://doi.org/10.1007/BF00811811
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00811811