Hostname: page-component-586b7cd67f-2brh9 Total loading time: 0 Render date: 2024-11-25T17:29:22.854Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural Transformations in Platinum Supported on y-Alumina Studied by X-Ray Absorption Spectroscopy

Published online by Cambridge University Press:  28 February 2011

H. J. Robota ,
M. J. Cohn ,
A. Z. Ringwelski  and
R. A. Eades
H. J. Robota
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
M. J. Cohn
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
A. Z. Ringwelski
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
R. A. Eades
Affiliation:
Allied-Signal Engineered Materials Research Center, Des Plaines, IL, 60017-5016
Get access

Abstract

Pt particles in a highly dispersed Pt/γ-A12O3 catalyst have been found to undergo ordering following the removal of chemisorbed oxygen with hydrogen at room temperature. The very small Pt particles are found to be disordered following an initial reduction at 500°C. Treating the ordered phase of Pt at 500°C in hydrogen is found to restore the disordered phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 111: Symposium O – Microstructure and Properties of Catalysts , 1987 , 201
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.)

References

1. Via, G.H., Sinfelt, J.H., and Lytle, F.W., J. Chem. Phys. 71, 690 (1979)Google Scholar
2. R.W. Broach, J.P. Hickey, and G.R. Lester, presented in the Symposium on Advanced Catalyst Characterization at the Annual Meeting of the Materials Research Society, November 1982; Robota, H.J., Broach, R.W., Sachtler, J.W.A., and Bradley, S.A., Ultramicroscopy, 22, 149 (1987)CrossRefGoogle Scholar
3. Lytle, F.W., Greegor, R.B., Marques, E.C., Sandstrom, D.R., Via, G.H., and Sinfelt, J.H., J. Catal. 95, 546 (1985)Google Scholar
4. Koningsberger, D.C. and Sayers, D.E., Solid State Ionics 16, 23 (1985)Google Scholar
5. Cook, J. W. and Sayers, D.E., J. Appl. Phys. 52, 5024 (1981)CrossRefGoogle Scholar
6. van Zon, J.B.A.D., Koningsberger, D.C., van't Blik, H.F.J., and Sayers, D.E., J. Chem. Phys. 82, 5742 (1985); D.C. Koningsberger, J.H.A. Martens, R. Prins, D.R. Short and D.E. Sayers, J. Phys. Chem. 90, 3047 (1986)Google Scholar
7. Eisenberger, P. and Brown, G.S., Sol. Stat. Comm. 29, 481 (1979)CrossRefGoogle Scholar
8. Bunker, G., Nucl. Instrum. Methods 207, 437 (1983)Google Scholar
9. Crozier, E.D. and Seary, A.J., Can. J. Phys. 59, 876 (1981)CrossRefGoogle Scholar
10. Lee, P.A., Citrin, P.H., Eisenberger, P., and Kincaid, B.M., Rev. Mod. Phys. 53, 769 (1981)CrossRefGoogle Scholar