Hostname: page-component-54dcc4c588-hp6zs Total loading time: 0 Render date: 2025-10-11T23:53:17.179Z Has data issue: false hasContentIssue false
  • English
  • Français

Mössbauer and Exafs Study of 57Fe Labelled Pt/SiO2 Catalysts

Published online by Cambridge University Press:  28 February 2011

J. A. Sawicki ,
J. H. Rolston ,
S. R. Julian ,
T. Tyliszczak  and
K. D. McCrimmon
J. A. Sawicki
Affiliation:
Chalk River Nuclear Laboratories, Chalk River, Ontario KOJ 1JO, Canada
J. H. Rolston
Affiliation:
Chalk River Nuclear Laboratories, Chalk River, Ontario KOJ 1JO, Canada
S. R. Julian
Affiliation:
Department of Physics, University of Toronto, Toronto, Ontario MSS 1A7, Canada
T. Tyliszczak
Affiliation:
Materials Science Center, McMaster University, Hamilton, Ontario L8S 4M1, Canada
K. D. McCrimmon
Affiliation:
Chalk River Nuclear Laboratories, Chalk River, Ontario KOJ 1JO, Canada
Get access

Abstract

Specimens of highly dispersed Pt/Silicalite catalyst, decorated with 57Fe by impregnation in aqueous ferric nitrate solution, have been studied after decoration, and various pretreatments including exposure to carbon monoxide, by in situ Mössbauer spectroscopy. The form of Pt was followed by EXAFS analysis near the Pt LIII edge. The microstructural studies were combined with CO chemisorption and infrared absorption measurements. It is observed that iron in Pt clusters is very reactive even at ambient temperatures and that the interaction of Fe with CO is strongly accelerated by platinum.

Information

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 111: Symposium O – Microstructure and Properties of Catalysts , 1987 , 65
Copyright
Copyright © Materials Research Society 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Article purchase

Temporarily unavailable

References

1. Guczi, L., Cat. Rev. Sci. Eng. 23, 329 (1981).Google Scholar
2. Tøpsoe, H., Clausen, B.S. and Mørup, S., Hyperfine Interactions 27, 231 (1986).Google Scholar
3. Bartholomew, C.H. and Boudart, M., J. Catal. 29, 278 (1973).Google Scholar
4. Vannice, M.A. and Garten, R.L., J. Mol. Catal. 1, 201 (1975/6).Google Scholar
5. Dezsi, I., Nagy, D.L., Eszterle, M. and Guczi, L., React. Kinet. Catal. Lett. 8, 301 (1978); J. Phys. (Paris) 40, C2–76 (1979).Google Scholar
6. Niemantsverdriet, J.W., van Kaam, J.A.C., Flipse, C.F.J., and van der Kraan, A.M., J. Catal. 96, 58 (1985).CrossRefGoogle Scholar
7. Niemantsverdriet, J.W., van Grondelle, J. and van der Kraan, A.M., Hyperfine Interactions 28, 867 (1986).Google Scholar
8. Palaith, D., Kimball, C.W., Preston, R.S. and Crangle, J., Phys. Rev. 178, 795 (1969).Google Scholar
9. Sawicka, B.D. and Sawicki, J.A., J. Phys. 40, C2–576 (1979).Google Scholar
10. Garten, R.L. and Sinfelt, J.H., J. Catal. 62, 127 (1980).CrossRefGoogle Scholar
11. Sinfelt, J.H. and Via, G.H., J. Catal. 56, 1 (1979).CrossRefGoogle Scholar
12. Gijzeman, O.L.J., Vink, T.J., van Pruissen, O.P. and Gens, J.W., in press.Google Scholar
13. Sinfelt, J.H., Via, G.H. and Lytle, F.W., J. Chem. Phys. 76, 2779 (1982); Cat. Rev. Sci. Eng.26, 1 (1984).Google Scholar
14. Lytle, F.W., Greegor, R.B., Marques, E.C., Sundstrom, D.R., Via, G.H. and Sinfelt, J.H., J. Catal. 95, 546 (1985).Google Scholar