Ring enlargement and aromatization of propylcyclobutane over silica-supported Pt, Pd and Rh in hydrogen atmosphere

Béla Török, István Pálinkó, Árpád Molnár, Mihály Bartók

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Ring enlargement and/or aromatization accompany the hydrogenative ring opening of propylcyclobutane over Pt/SiO2, Rh/SiO2 and Pd/SiO2 catalysts at high temperature. Ring enlargement provides only methylcyclohexane, while toluene and benzene are the products of aromatization. Both reactions occur over Pt/SiO2, whereas only aromatization takes place over the other two catalysts. Increasing hydrogen pressure favours direct methylcyclohexane formation, while under relatively hydrogen-poor conditions it forms via secondary pathways. Benzene formation is favoured by temperature increase and is probably due to the demethylation of adsorbed toluene-like species.

Original languageEnglish
Pages (from-to)61-69
Number of pages9
JournalJournal of molecular catalysis
Volume91
Issue number1
DOIs
Publication statusPublished - Jun 27 1994

Keywords

  • Aromatization
  • Palladium
  • Platinum
  • Propylcyclobutane
  • Rhodium
  • Ring enlargement
  • Silica
  • Supported catalysts

ASJC Scopus subject areas

  • Engineering(all)

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