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Effect of Catalyst Preparation on Hydroisomerization of n-Heptane over Pt/Silicalite-1

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Abstract

The isomerization of n-heptane was comparatively investigated over Pt catalysts prepared by deposition (Pt/S-1-DP) and impregnation precipitation (Pt/S-1-IMP) method with a low loading, separately. It was found that Pt/S-1-DP catalyst produced a much higher catalytic conversion compared with the counterpart catalyst prepared by impregnation. Combined with various characterization techniques, the better performance over Pt/S-1-DP was attributed to not only the well improved dispersity and the smaller size of Pt particles but also the faster transfer of reactive species between Pt sites and acid sites. The activity could be improved by increasing the reduction temperature. Moreover, the (de)hydrogenation of Pt over Pt/S-1 catalyst was verified by in situ infrared spectroscopy through H/D isotope exchange experiment.

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Acknowledgements

Supports from the National Natural Science Foundation of China (NSFC 20473016, 20673018) are gratefully acknowledged.

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Authors and Affiliations

  1. Department of Chemistry and Engineering in Catalysis & State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China

    Lihua Shi, Guodong Liu & Hongchen Guo

  2. Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Science, Dalian, 116023, China

    Xiangen Song

Authors
  1. Lihua Shi
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  2. Xiangen Song
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  3. Guodong Liu
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  4. Hongchen Guo
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Correspondence to Hongchen Guo.

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Shi, L., Song, X., Liu, G. et al. Effect of Catalyst Preparation on Hydroisomerization of n-Heptane over Pt/Silicalite-1. Catal Lett 147, 2549–2557 (2017). https://doi.org/10.1007/s10562-017-2157-7

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  • DOI: https://doi.org/10.1007/s10562-017-2157-7

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