Hydrogenation of Phenol to Cyclohexanone over Bifunctional Pd/C-Heteropoly Acid Catalyst in the Liquid Phase
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Cyclohexanone is an important intermediate in the manufacture of polyamides in chemical industry, but direct selective hydrogenation of phenol to cyclohexanone under mild conditions is a challenge. Hydrogenation of phenol to cyclohexanone has been investigated in the presence of the composite catalytic system of Pd/C-heteropoly acid. 100% conversion of phenol and 93.6% selectivity of cyclohexanone were achieved within 3 h under 80 °C and 1.0 MPa hydrogen pressure. It has been found that a synergetic effect of Pd/C and heteropoly acid enhanced the catalytic performance of the composite catalytic system which suppressed the hydrogenation of cyclohexanone to cyclohexanol.
KeywordsCyclohexanone Catalysis Hydrogenation Pd/C-heteropoly acid Phenol
This work was financially supported by the Natural Science Foundation of China (31370570), the Taishan Scholars Projects of Shandong (ts201511033), the Key R&D Project of Shandong (2017GGX40106), and the People’s Livelihood Science and Technology Project of Qingdao (173383NSH). The authors are also grateful for the experimental conditions which the Polyphase Fluid Reaction and Separation Engineering Key Laboratory of the Shandong gives.
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Conflict of interest
There are no conflicts to declare.
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