Mössbauer spectroscopy studies of Sn-Pt/Al2O3 catalysts prepared by controlled surface reactions

Cs Vértes, E. Tálas, I. Czakó-Nagy, J. Ryczkowski, S. Göbölös, A. Vértes, J. Margitfalvi

Research output: Contribution to journalArticle

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Abstract

Mössbauer spectroscopy was used to study the chemical state of tin in a new type of Sn-Pt/Al2O3 catalysts. Controlled surface reaction of tin tetraethyl with hydrogen preadsorbed on platinum resulted in the exclusive formation of a Pt-SnEt3 surface complex, which decomposed in hydrogen at 773 K to PtxSn alloy (3 <x <4). Contamination of the catalyst by air at room temperature resulted in partial oxidation of tin in the alloy to SnO2. Upon oxidation at 673 K tin segregated to SnO2. Both SnO2 and PtxSn alloy were detected in the rereduced catalyst. Anchoring SnCl2 onto lithiated Pt/Al2O3 and subsequent reduction of the catalyst in hydrogen did not result in the formation of tin-platinum alloy, indicating an exclusive tin-alumina interaction.

Original languageEnglish
Pages (from-to)149-159
Number of pages11
JournalApplied Catalysis
Volume68
Issue number1
DOIs
Publication statusPublished - 1991

Fingerprint

Surface reactions
Tin
Spectroscopy
Catalysts
Hydrogen
Platinum alloys
Tin alloys
Oxidation
Platinum
Contamination
Alumina
Air
Temperature

Keywords

  • catalyst characterization (Mössbauer spectroscopy).
  • controlled surface reactions
  • Mössbauer spectroscopy
  • tin-platinum/alumina

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Vértes, C., Tálas, E., Czakó-Nagy, I., Ryczkowski, J., Göbölös, S., Vértes, A., & Margitfalvi, J. (1991). Mössbauer spectroscopy studies of Sn-Pt/Al2O3 catalysts prepared by controlled surface reactions. Applied Catalysis, 68(1), 149-159. https://doi.org/10.1016/S0166-9834(00)84099-3

Mössbauer spectroscopy studies of Sn-Pt/Al2O3 catalysts prepared by controlled surface reactions. / Vértes, Cs; Tálas, E.; Czakó-Nagy, I.; Ryczkowski, J.; Göbölös, S.; Vértes, A.; Margitfalvi, J.

In: Applied Catalysis, Vol. 68, No. 1, 1991, p. 149-159.

Research output: Contribution to journalArticle

Vértes, C, Tálas, E, Czakó-Nagy, I, Ryczkowski, J, Göbölös, S, Vértes, A & Margitfalvi, J 1991, 'Mössbauer spectroscopy studies of Sn-Pt/Al2O3 catalysts prepared by controlled surface reactions', Applied Catalysis, vol. 68, no. 1, pp. 149-159. https://doi.org/10.1016/S0166-9834(00)84099-3
Vértes, Cs ; Tálas, E. ; Czakó-Nagy, I. ; Ryczkowski, J. ; Göbölös, S. ; Vértes, A. ; Margitfalvi, J. / Mössbauer spectroscopy studies of Sn-Pt/Al2O3 catalysts prepared by controlled surface reactions. In: Applied Catalysis. 1991 ; Vol. 68, No. 1. pp. 149-159.
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