Catalysis Letters

, 141:1072 | Cite as

Cyclohexanone Conversion Catalyzed by Pt/γ-Al2O3: Evidence of Oxygen Removal and Coupling Reactions

  • Tarit Nimmanwudipong
  • Ron C. Runnebaum
  • Kevin Tay
  • David E. Block
  • Bruce C. Gates
Article

Abstract

The conversion of cyclohexanone, often identified as an intermediate in the conversion of lignin-derived compounds, was catalyzed by Pt/γ-Al2O3 in the presence of H2 at 573 K. Dehydrogenation was a kinetically significant reaction, indicated by a high selectivity for phenol. Oxygen-removal reactions are indicated by products including benzene, cyclohexene, and cyclohexene. Bimolecular reactions involving cyclohexanone and/or products of its conversion led to the formation of bicyclic C12 compounds, with 2-cyclohexylcyclohexan-1-one and 2-phenylphenol being the most abundant. Increasing the H2 partial pressure led to increased oxygen removal and faster formation of monocyclic and bicyclic hydrocarbons. At temperatures higher than 573 K, dehydrogenation became the dominant reaction class.

Graphical Abstract

Keywords

Cyclohexanone Supported platinum catalyst Dehydrogenation Oxygen removal Coupling reactions 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Tarit Nimmanwudipong
    • 1
  • Ron C. Runnebaum
    • 1
  • Kevin Tay
    • 1
  • David E. Block
    • 1
    • 2
  • Bruce C. Gates
    • 1
  1. 1.Department of Chemical Engineering and Materials ScienceUniversity of CaliforniaDavisUSA
  2. 2.Department of Viticulture and EnologyUniversity of CaliforniaDavisUSA

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