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

  • J. A. Sawicki (a1), J. H. Rolston (a1), S. R. Julian (a2), T. Tyliszczak (a3) and K. D. McCrimmon (a1)...

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.

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

  • J. A. Sawicki (a1), J. H. Rolston (a1), S. R. Julian (a2), T. Tyliszczak (a3) and K. D. McCrimmon (a1)...

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