Benzene formation during the oxidation of cyclohexene in the presence and absence of thiophene over a supported palladium catalyst

Emwajee Kullavanijaya, Noel W. Cant, David L. Trimm

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

The catalytic oxidations of cyclohexene and thiophene, singly and together, have been studied over a Pd/CeO2/Al2O3 monolith catalyst. On a freshly reduced sample, the oxidation of cyclohexene on its own commences below 100°C with benzene as the major product over a considerable temperature range, even when O2 is in large excess. Benzene is still produced when cyclohexene and thiophene are co-oxidised and the reaction exhibits oscillations, associated with accumulation and removal of sulfur, at high conversions. The oxidation of thiophene is self-poisoned to some degree and sulfur accumulated during it considerably reduces the activity of the catalyst for the subsequent oxidation of cyclohexene. However, the maximum yield of benzene remains high.

Original languageEnglish
Pages (from-to)25-29
Number of pages5
JournalCatalysis Letters
Volume75
Issue number1-2
DOIs
Publication statusPublished - 2001

Keywords

  • Benzene
  • Cyclohexene
  • Oxidation
  • Palladium
  • Thiophene

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