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Influence of Oxygen Mobility over Supported Pt Catalysts on Combustion Temperature of Coke Generated in Propane Dehydrogenation

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Abstract

Five supported Pt catalysts (Pt/SBA-15, Pt/Al2O3, Pt/MgO, Pt/CeO2, and Pt/Ce0.63Zr0.37O2 ) were prepared to systematically investigate the influence of oxygen mobility over the support on combustion temperatures of coke produced in propane dehydrogenation. A strong correlation between the oxygen mobility of the supports and the combustion temperature of the coke was observed. The coke combustion temperatures increased following the reverse order of oxygen mobility of the supports: CeZrO2 > CeO2 > MgO > Al2O3 > SBA-15, implying that the oxygen transfer over supports was a rate-determining step in the coke combustion process.

Graphical Abstract

[Coke combustion was performed in a TGA instrument under air flow with a heating rate of 5 °C/min. The support with higher oxygen mobility resulted in a lower coke combustion temperature.]

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Acknowledgments

This work was supported by the Energy Efficiency & Resources program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Ministry of Knowledge Economy (MKE) of the Korean government (No. 2007MCC24P0230202009).

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Authors and Affiliations

  1. School of Chemical Engineering and Bioengineering, University of Ulsan, Daehakro 93 Nam-gu, Ulsan, 680-749, South Korea

    Bao Khanh Vu & Eun Woo Shin

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  1. Bao Khanh Vu
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  2. Eun Woo Shin
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Correspondence to Eun Woo Shin.

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Vu, B.K., Shin, E.W. Influence of Oxygen Mobility over Supported Pt Catalysts on Combustion Temperature of Coke Generated in Propane Dehydrogenation. Catal Lett 141, 699–704 (2011). https://doi.org/10.1007/s10562-010-0527-5

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  • DOI: https://doi.org/10.1007/s10562-010-0527-5

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