Solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcite-derived Cu-MgAlO mixed metal oxides

doi:10.1016/j.cjche.2021.04.020

Chinese Journal of Chemical Engineering ›› 2022, Vol. 42 ›› Issue (2): 269-276.DOI: 10.1016/j.cjche.2021.04.020

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Solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcite-derived Cu-MgAlO mixed metal oxides

Jian Jian^1,2, Dexing Yang², Peng Liu², Kuiyi You², Weijie Sun², Hu Zhou¹, Zhengqiu Yuan¹, Qiuhong Ai², Hean Luo²

1. School of Chemistry and Chemical Engineering, Hunan Engineering Research Center for Functional Membrane Materials, Hunan University of Science and Technology, Xiangtan 411201, China;
2. School of Chemical Engineering, National & Local United Engineering Research Center for Chemical Process Simulation and Intensification, Xiangtan University, Xiangtan 411105, China

Received:2020-08-31 Revised:2021-03-31 Online:2022-03-30 Published:2022-02-28
Contact: Kuiyi You,E-mail:youkuiyi@126.com;Hean Luo,E-mail:hluo@xtu.edu.cn
Supported by:
We are grateful for the financial support by the National Natural Science Foundation of China (21676226 and 21776067), Natural Science Foundation for Distinguished Young Scholars in Hunan Province (2018JJ1023 and 2020JJ2014),Natural Science Foundation in Hunan Province (2018JJ3144), Key Research and Development Program in Hunan Province (2019GK2041), Scientific Research Fund of Hunan Provincial Education Department (17C0630), PhD Startup Foundation of Hunan University of Science and Technology (E51756).

Solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcite-derived Cu-MgAlO mixed metal oxides

Jian Jian^1,2, Dexing Yang², Peng Liu², Kuiyi You², Weijie Sun², Hu Zhou¹, Zhengqiu Yuan¹, Qiuhong Ai², Hean Luo²

1. School of Chemistry and Chemical Engineering, Hunan Engineering Research Center for Functional Membrane Materials, Hunan University of Science and Technology, Xiangtan 411201, China;
2. School of Chemical Engineering, National & Local United Engineering Research Center for Chemical Process Simulation and Intensification, Xiangtan University, Xiangtan 411105, China

通讯作者: Kuiyi You,E-mail:youkuiyi@126.com;Hean Luo,E-mail:hluo@xtu.edu.cn
基金资助:
We are grateful for the financial support by the National Natural Science Foundation of China (21676226 and 21776067), Natural Science Foundation for Distinguished Young Scholars in Hunan Province (2018JJ1023 and 2020JJ2014),Natural Science Foundation in Hunan Province (2018JJ3144), Key Research and Development Program in Hunan Province (2019GK2041), Scientific Research Fund of Hunan Provincial Education Department (17C0630), PhD Startup Foundation of Hunan University of Science and Technology (E51756).

Abstract

Abstract: A highly efficient and stable hydrotalcite-derived Cu-MgAlO catalyst was developed for the partial oxidation of cyclohexane with molecular oxygen. The physical-chemical properties of Cu-MgAlO catalysts were studied, and the results indicated that the copper component had been successfully introduced into the hydrotalcite unit layer structure. The catalytic reaction results showed that copper as the active species could activate C-H bond and effectively promote the decomposition of cyclohexyl hydroperoxide (CHHP) to the mixture of cyclohexanol and cyclohexanone (KA oil). 8.3% of cyclohexane conversion and 82.9% of selectivity for KA oil were obtained over 9%Cu-MgAlO catalyst at 150℃ with 0.6 MPa of oxygen pressure for 2 h. Especially, its catalytic performance was still stable after five runs.

Key words: Hydrotalcite-derived Cu-MgAlO, Cyclohexane, Cyclohexanol and cyclohexanone mixture (KA oil), Partial oxidation, Solvent-free

摘要： A highly efficient and stable hydrotalcite-derived Cu-MgAlO catalyst was developed for the partial oxidation of cyclohexane with molecular oxygen. The physical-chemical properties of Cu-MgAlO catalysts were studied, and the results indicated that the copper component had been successfully introduced into the hydrotalcite unit layer structure. The catalytic reaction results showed that copper as the active species could activate C-H bond and effectively promote the decomposition of cyclohexyl hydroperoxide (CHHP) to the mixture of cyclohexanol and cyclohexanone (KA oil). 8.3% of cyclohexane conversion and 82.9% of selectivity for KA oil were obtained over 9%Cu-MgAlO catalyst at 150℃ with 0.6 MPa of oxygen pressure for 2 h. Especially, its catalytic performance was still stable after five runs.

关键词: Hydrotalcite-derived Cu-MgAlO, Cyclohexane, Cyclohexanol and cyclohexanone mixture (KA oil), Partial oxidation, Solvent-free

Jian Jian, Dexing Yang, Peng Liu, Kuiyi You, Weijie Sun, Hu Zhou, Zhengqiu Yuan, Qiuhong Ai, Hean Luo. Solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcite-derived Cu-MgAlO mixed metal oxides[J]. Chinese Journal of Chemical Engineering, 2022, 42(2): 269-276.

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Solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcite-derived Cu-MgAlO mixed metal oxides

Solvent-free partial oxidation of cyclohexane to KA oil over hydrotalcite-derived Cu-MgAlO mixed metal oxides

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