Selective suppression of disproportionation reaction in solvent-less benzyl alcohol oxidation catalysed by supported Au-Pd nanoparticles

Enhong Cao, Meenakshisundaram Sankar, Ewa Nowicka, Qian He, Moataz Morad, Peter J. Miedziak, Stuart H. Taylor, Donald Bethell, Christopher J. Kiely, Asterios Gavriilidis*, Graham J. Hutchings, David Knight

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)
17 Downloads (Pure)

Abstract

Disproportionation of benzyl alcohol has been identified as the source of toluene formation in the solvent free oxidation of benzyl alcohol using supported gold palladium catalysts. There is a slight increase in the disproportionation reaction, and hence the toluene selectivity, when this reaction is performed in a continuous mode using a micro-packed bed reactor when compared to the same reaction performed in a conventional glass stirred batch reactor. Oxidation and disproportionation reactions respond slightly differently to the changes in reaction parameters, like oxygen concentration and pressure, when a micro packed bed reactor was used instead of a conventional glass stirred reactor. When MgO supported gold-palladium catalysts were used for this reaction, the toluene selectivity reduced substantially at the cost of conversion.

Original languageEnglish
Pages (from-to)146-152
Number of pages7
JournalCatalysis Today
Volume203
DOIs
Publication statusPublished - 30 Mar 2013
Externally publishedYes

Keywords

  • Alcohol oxidation
  • Benzyl alcohol oxidation
  • Gold palladium catalysts

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