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Effects of the preparation method and calcination temperature on Cu–Cr–Mg–Al catalysts for the dehydrogenation of cyclohexanol

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Abstract

The activities of the Cu–Cr–Mg–Al catalysts in the dehydrogenation of cyclohexanol to cyclohexanone were correlated with particle sizes and the reducibility of the copper species based on XRD and TPR characterizations. Cu0 was proven to be the active center of the catalysts calcined at low temperatures and some solid solution (MgCu2O3) and spinel (CuAl2O4 or MgAl2O4) were produced when the calcination temperature reached 1,000 °C. The Cu–Cr–Mg–Al catalyst prepared by the co-precipitation method and calcined at 400 °C showed the best activity, with a conversion of 79.7% and a selectivity of 98.6% at 300 °C.

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Acknowledgements

The authors thank Professor David Knight for his helpful discussions. Financial support by the National Natural Science Foundation of China (20806018), the Natural Science Foundation of Hebei Province (B2007000156) and the Science Project of the Hebei Education Department (2005350) are gratefully acknowledged.

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Authors and Affiliations

  1. College of Chemistry and Environmental Science, Hebei University, 071002, Baoding, Hebei, People’s Republic of China

    Guoyi Bai, Xinxin Fan, Hailong Wang & Huisen Ning

  2. School of Chemical Engineering and Technology, Tianjin University, 300072, Tianjin, People’s Republic of China

    Fei He

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  1. Guoyi Bai
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  2. Xinxin Fan
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  3. Hailong Wang
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  4. Fei He
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Correspondence to Guoyi Bai.

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Bai, G., Fan, X., Wang, H. et al. Effects of the preparation method and calcination temperature on Cu–Cr–Mg–Al catalysts for the dehydrogenation of cyclohexanol. React Kinet Catal Lett 98, 341–348 (2009). https://doi.org/10.1007/s11144-009-0082-5

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  • DOI: https://doi.org/10.1007/s11144-009-0082-5

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