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Influence of Calcium Addition on Catalytic Properties of PtSn/ZSM-5 Catalyst for Propane Dehydrogenation

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Abstract

In this work the influence of the Ca addition to PtSn/ZSM-5 catalyst on its performance for propane dehydrogenation was investigated. The catalysts were characterized by X-ray diffraction, BET analysis, TEM, NH3-TPD, TPO and TG. Results showed that the addition of calcium could not only modify the characteristics and properties of both acid and metal function but also suppress coke deposits on the catalyst. The addition of 0.9 wt% Ca to PtSn/ZSM-5 prompted catalytic activity. However, the incorporation of excessive Ca resulted in catalyst deactivation. TPR results implied that excessive Ca promoted the reduction of oxidized tin species to Sn0. The Sn0 probably could interact with Pt to produce a PtSn alloy which led to the diminution of catalytic activity.

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Acknowledgments

The authors are grateful to the National Nature Science Foundation of China (50873026), Science and Technology Support Program of Jiangsu Province of China (BE2008129) and “Six Talents Pinnacle Program” of Jiangsu Province of China (06-A-033) for financial supports.

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Southeast University, 211189, Jiang Ning Region, Nanjing, People’s Republic of China

    Linyang Bai, Yuming Zhou, Yiwei Zhang, Hui Liu & Menghan Tang

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  1. Linyang Bai
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  2. Yuming Zhou
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  3. Yiwei Zhang
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  4. Hui Liu
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  5. Menghan Tang
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Correspondence to Yuming Zhou.

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Bai, L., Zhou, Y., Zhang, Y. et al. Influence of Calcium Addition on Catalytic Properties of PtSn/ZSM-5 Catalyst for Propane Dehydrogenation. Catal Lett 129, 449–456 (2009). https://doi.org/10.1007/s10562-008-9822-9

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  • DOI: https://doi.org/10.1007/s10562-008-9822-9

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