Reactions of n-hexane on Pt-Sn/Al2O3 and removal of retained hydrocarbons by hydrogenation

K. Matusek, C. Kappenstein, M. Guérin, Z. Paál

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

n-hexane was reacted on two Pt-Sn/Al2O3 catalysts, one prepared by coimpregnation (T) the other by using a bimetallic PtSn complex precursor (N). Both catalysts produced isomers, methylcyclopentane fragments and benzene, the aromatic selectivity being higher on catalyst N. The hydrocarbon entities remaining after reaction were removed by hydrogen treatment. They contained methane, C2-C5 fragments (not observed on Pt, thus unique for PtSn) and benzene. The possible state and composition of chemisorbed carbonaceous entities during reactions are discussed. More hydrocarbons, including slightly more methane could be hydrogenated off from catalyst N of lower dispersion. The higher overall activity of catalyst N in the presence of more than one C per surface Pt points to its higher coke tolerance.

Original languageEnglish
Pages (from-to)33-36
Number of pages4
JournalCatalysis Letters
Volume64
Issue number1
DOIs
Publication statusPublished - Jan 2000

Keywords

  • Catalyst carbonization
  • Complex bimetallic precursor for Pt-Sn
  • Hydrocarbonaceous deposits
  • Hydrogenation of coke precursors
  • Platinum-tin catalysts
  • Pt-Sn/AlO3 catalysts

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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