C6-alkane reactions over γ-alumina supported palladium catalysts

M. Skotak, Z. Karpiński

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

A series of Pd/Al2O3 catalysts of different Pd loading were tested in C6-alkane reactions. Different catalyst pretreatment was used to change both the acidity of alumina and the state of palladium. A parallel study with the use of n-hexane and 2,2-dimethylbutane showed several similarities in the catalytic behaviour of the Pd/Al2O3 catalysts. Highly reduced catalysts showed completely different performance than samples reduced at lower temperatures. High temperature reduction leads to a big enhancement of catalytic activity and also vastly increases the isomerization selectivity. Considerable changes were also noticed in the activation energy. Oxidation and subsequent mild reduction of highly reduced samples brings about, however, different results for isomerization selectivity: a partial recovery in the case of n-hexane and only a very small change for the 2,2-dimethylbutane reaction. The results confirm the major contribution of acidic sites present in activated alumina to the overall catalytic behaviour of Pd/Al2O3 samples.

Original languageEnglish (US)
Pages (from-to)839-844
Number of pages6
JournalPolish Journal of Chemistry
Volume75
Issue number6
StatePublished - Dec 1 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

Keywords

  • C alkane conversion
  • Catalysis
  • Palladium catalysts
  • Role of activated alumina

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