Abstract
The hydrogenation of phenol has been investigated over group VIII metals by a gas chromatographic pulse technique. Major products were found to be cyclohexanone and cyclohexanol, but benzene, cyclohexane and other hydrocarbons were also formed. The relative amount of cyclohexanol over cyclohexanone formed during the hydrogenation varied by a factor of about 100 depending on both catalyst and reaction temperature. This result was interpreted in terms of the relative catalytic activity of metals for the consecutive reaction : [chemical formula] The initial product due to the breaking of the carbon-oxygen bond was benzene rather than cyclohexane even when cyclohexanol or cyclohexanone was injected in the presence of hydrogen. This unusual result was briefly discussed.
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