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Influence of Acid–Base Properties of the Support on Copper-Based Catalysts for Catalytic Dehydrogenation of 2-Butanol

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Abstract

Copper-based catalysts, supported on γ-Al2O3, La2O3, and γ-Al2O3–La2O3, respectively, were prepared by co-precipitation and tested in the continuous dehydrogenation of 2-butanol to methyl ethyl ketone. The catalytic performance of the catalysts was found to be markedly dependent on acid–base properties of the support. Three copper species were found in the calcined samples: Cu2+, [Cu–O–Cu] n cluster, and bulky CuO oxides. Cu0 was shown to be the active species of the reduced copper-based catalysts. The synergistic effect between γ-Al2O3 and La2O3 when used as a support for well dispersed Cu0 gave the system with the best activity and stability; whereas, loss of the active Cu0 during the reaction was believed to be the main reason for Cu–La2O3 deactivation. Moreover, a possible reaction mechanism was proposed based on GC–MS results.

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Acknowledgments

The authors thank Professor L. M. Harwood for his kind assistance. Financial support by the National Natural Science Foundation of China (20806018) and Natural Science Foundation of Hebei Province (B2011201017) are gratefully acknowledged.

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Authors and Affiliations

  1. College of Chemistry and Environmental Science, Hebei University, No. 180 Wusi East Road, Baoding, 071002, Hebei, People Republic of China

    Guoyi Bai, Yalong Wang, Fei Li, Zhen Zhao, Guofeng Chen & Na Li

  2. Hebei Geological Laboratory, Baoding, 071051, Hebei, People Republic of China

    Xue Han

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  1. Guoyi Bai
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  2. Yalong Wang
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Correspondence to Guoyi Bai.

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Bai, G., Wang, Y., Li, F. et al. Influence of Acid–Base Properties of the Support on Copper-Based Catalysts for Catalytic Dehydrogenation of 2-Butanol. Catal Lett 143, 101–107 (2013). https://doi.org/10.1007/s10562-012-0926-x

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  • DOI: https://doi.org/10.1007/s10562-012-0926-x

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