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Effect of Support Crystallite Size on Catalytic Activity and Deactivation of Nanocrystalline ZnAl2O4-Supported Pd Catalysts in Liquid-Phase Hydrogenation

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Abstract

The catalytic activity and deactivation of nanocrystalline ZnAl2O4-supported Pd catalysts were investigated for the liquid-phase hydrogenation under mild conditions. Nanocrystalline ZnAl2O4 spinels with average crystallite size between 8 and 33 nm were synthesized by the solvothermal method in toluene. Higher turnover frequencies for 1-heptyne hydrogenation and less deactivation due to Pd leaching were obtained for the Pd/ZnAl2O4-33 nm catalyst. XPS and ESR results suggest that the presence of defects in larger crystallite size ZnAl2O4 resulted in higher Pd dispersion and stronger interaction between Pd and the support.

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Acknowledgments

Financial supports from the Thailand Research Fund (RMU50-Joongjai Panpranot), the Graduate School of Chulalongkorn University (the 90th Anniversary of Chulalongkorn University-the Golden Jubilee Fund), and the Commission on Higher Education, Ministry of Education, Thailand are gratefully acknowledged.

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Authors and Affiliations

  1. Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand

    Terachai Sirikajorn, Piyasan Praserthdam & Joongjai Panpranot

  2. Department of Chemical Engineering, Silpakorn University, Sanam Chandra Palace Campus, Nakorn Pathom, 73000, Thailand

    Okorn Mekasuwandumrong

  3. Department of Chemical and Biomolecular Engineering, Clemson University, Clemson, SC, 29634, USA

    James G. Goodwin Jr.

Authors
  1. Terachai Sirikajorn
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  2. Okorn Mekasuwandumrong
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  3. Piyasan Praserthdam
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  4. James G. Goodwin Jr.
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  5. Joongjai Panpranot
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Correspondence to Joongjai Panpranot.

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Sirikajorn, T., Mekasuwandumrong, O., Praserthdam, P. et al. Effect of Support Crystallite Size on Catalytic Activity and Deactivation of Nanocrystalline ZnAl2O4-Supported Pd Catalysts in Liquid-Phase Hydrogenation. Catal Lett 126, 313–318 (2008). https://doi.org/10.1007/s10562-008-9621-3

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  • DOI: https://doi.org/10.1007/s10562-008-9621-3

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