Journal
CATALYSIS LETTERS
Volume 141, Issue 8, Pages 1072-1078Publisher
SPRINGER
DOI: 10.1007/s10562-011-0659-2
Keywords
Cyclohexanone; Supported platinum catalyst; Dehydrogenation; Oxygen removal; Coupling reactions
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Funding
- Chevron Technology Ventures, a division of Chevron U.S.A., Inc. An Agilent Technologies Foundation [GC7890]
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The conversion of cyclohexanone, often identified as an intermediate in the conversion of lignin-derived compounds, was catalyzed by Pt/gamma-Al2O3 in the presence of H-2 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 C-12 compounds, with 2-cyclohexylcyclohexan-1-one and 2-phenylphenol being the most abundant. Increasing the H-2 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.
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