The activity of Au supported on various types of carbon in the ring transformation reactions of methyloxirane

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Abstract

In this work the catalytic activity of gold catalysts supported on various forms of carbon is described and compared in the ring transformations of propylene oxide (methyloxirane). The catalysts were Au/multiwall carbon nanotube (Au/MWNT) Au/activated carbon and Au/graphite. The reactions were studied in a pulse microreactor in the 363 - 473 K temperature range. Methyloxirane underwent deoxygenation and isomerisation over the Au/MWNT and Au/activated carbon catalysts but deoxygenation only occurred over Au/graphite. At 363 K the Au/MWNT was only active, and it proved to be the most active catalyst at each temperature. This finding was attributed to an optimum mix of defect sites at the metal-support interface and electric conductivity of the support - both believed to be crucial in the high catalytic activity observed.

Original languageEnglish
Pages (from-to)343-348
Number of pages6
JournalReaction Kinetics and Catalysis Letters
Volume87
Issue number2
DOIs
Publication statusPublished - Apr 1 2006

Keywords

  • Au/activated carbon
  • Au/graphite
  • Au/multiwall carbon nanotube
  • Methyloxirane
  • Transformation pathways

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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