On the mechanism of n-butane disproportionation over platinum supported on tungstated zirconia: Isotopic labeling studies

Gustavo Larsen, Lucía M. Petkovic

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

The reactions of n-butane over platinum supported on tungstated zirconia in the presence of hydrogen were studied using isotopically labeled n-butanes and deuterium. All reaction pathways experience isotopic effects when the hydrogen flow is replaced by an equal flow of deuterium. The non-rate limiting formation of a bimolecular intermediate appears to account for the disproportionation products. Mass spectrometric analysis of the product stream also reveals that the intramolecular 1-2 shift of the labeled primary carbon atoms is easily detected under primary-product-only reaction regimes.

Original languageEnglish (US)
Pages (from-to)517-522
Number of pages6
JournalJournal of Molecular Catalysis A: Chemical
Volume113
Issue number3
DOIs
StatePublished - Dec 10 1996

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Keywords

  • Disproportionation mechanism
  • Isotopic effect
  • Tungstated zirconia
  • n-Butane labeling

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology
  • Physical and Theoretical Chemistry

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