Characterization and activity of Pt-Sn/Al2O3 catalysts of different preparation: coimpregnation and new Pt-Sn precursor

C. Kappenstein, M. Saouabe, M. Guérin, P. Marecot, I. Uszkurat, Z. Paál

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A new bimetallic Pt-Sn compound [Pt(NH3)4][SnCl6] has been used as precursor for the preparation of supported Pt-Sn/Al2O3 catalysts. A comparison of a dried sample with that prepared by coimpregnation displays different behaviour in TPR, chemisorption. The initial catalytic activity properties were checked in the reactions of cyclohexane dehydrogenation and cyclopentane ring opening, while n-hexane skeletal reactions were used to probe the quasisteady-state activity. The catalyst prepared via the Pt-Sn complex precursors exhibited some-what lower specific activity. This fact, together with enhanced olefin formation from n-hexane was taken as an indication of lower amount of contiguous Pt atoms and some electronic interaction between Pt and Sn in that catalyst.

Original languageEnglish
Pages (from-to)9-17
Number of pages9
JournalCatalysis Letters
Volume31
Issue number1
DOIs
Publication statusPublished - Mar 1 1995

Keywords

  • TPR
  • alumina supported platinum-tin catalysts
  • bimetallic precursor
  • catalyst preparation
  • coimpregnation
  • cyclohexane dehydrogenation
  • cyclopentane ring opening
  • n-hexane skeletal reactions

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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