A study of platinum-supported catalysts through hyperfine interactions
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The effect of indium addition on alumina-supported platinum catalysts was investigated by measurements of hyperfine interactions. Via lime differential perturbed angular correlation spectroscopy (TDPAC) on111Cd, Pt/Al2O3 catalysts were studied in the flow of a heptane/H2 gas stream. The results indicate that some amount of indium sticks to platinum which is then dispersed on the support surface. The amount of In that is free from platinum is mobile under reaction conditions, being capable of diluting platinum particles and draining off coke precursors from the platinum surface.
KeywordsIndium Thin Film Platinum Lime Hyperfine Interaction
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- J.H. Sinfelt,Bimetallic Catalysts: Discoveries, Concepts and Applications (Wiley, New York, 1983).Google Scholar
- F.M. Dautzendberg, J.N. Helle, P. Biloen and W.M.H. Sachtler, J. Catal. 63(1980)119.Google Scholar
- T. Butz, C. Vogdt, A. Lerf and H. Knözinger, J. Catal. 116(1989)31.Google Scholar
- F.G. Requejo, A.C. Bibiloni, H. Saitovitch and P.R.J. Silva, Phys. Slat. Solidi (a) 120(1990)105.Google Scholar
- R.M. Steffen and H. Frauenfelder, in:Perturbed Angular Correlations, eds. E. Karlsson, E. Matthias and K. Siegbahn (North-Holland, Amsterdam, 1964).Google Scholar
- J.Z. Shyu and K. Otto, Appl. Surf. Sci. 32(1988)246.Google Scholar