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Catalysts 2017, 7(5), 155; doi:10.3390/catal7050155

Catalytic Performance of MgO-Supported Co Catalyst for the Liquid Phase Oxidation of Cyclohexane with Molecular Oxygen

Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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Received: 21 March 2017 / Revised: 27 April 2017 / Accepted: 9 May 2017 / Published: 13 May 2017
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Abstract

A highly-efficient and stable MgO-supported Co (Co/MgO) catalyst was developed for the oxidation of cyclohexane with oxygen. The effects of the Co loading and support on the catalytic activity of the supported Co3O4 catalyst were investigated. The results show that the Co supported on MgO presented excellent activity and stability. When the Co/MgO catalyst with the Co content of 0.2 wt% (0.2%Co/MgO) was used, 12.5% cyclohexane conversion and 74.7% selectivity to cyclohexanone and cyclohexanol (KA oil) were achieved under the reaction conditions of 0.5 MPa O2 and 140 °C for 4 h. After being repeatedly used 10 times, its catalytic activity was hardly changed. Further research showed that the high catalytic performance of the 0.2%Co/MgO catalyst is attributed to its high oxygen-absorbing ability and the high ratio between the amount of weak and medium base sites with the help of the synergistic interaction between Co and MgO. View Full-Text
Keywords: MgO-supported Co catalyst; cyclohexane oxidation; oxygen oxidant; base sites MgO-supported Co catalyst; cyclohexane oxidation; oxygen oxidant; base sites
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Wu, M.; Fu, Y.; Zhan, W.; Guo, Y.; Guo, Y.; Wang, Y.; Lu, G. Catalytic Performance of MgO-Supported Co Catalyst for the Liquid Phase Oxidation of Cyclohexane with Molecular Oxygen. Catalysts 2017, 7, 155.

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