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Comparative Study of Ceria Supported Nano-sized Platinum Catalysts Synthesized by Extractive-Pyrolytic Method for Low-Temperature WGS Reaction

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Abstract

In this paper we demonstrate a way to prepare Pt/CeO2 catalysts and test their catalytic activity in WGSR. The catalysts have been synthesized by a simple and low cost extractive-pyrolytic method. The temperature programmed reduction analysis revealed that the presence of platinum particles enhances the reduction degree of ceria. The morphology of the surface, the particle size and specific surface area were determined by TEM, XRD and BET analysis. EPR studies gave evidence of metal–support interaction, which increases the mobility of oxygen anions in crystal lattice. The effects of various operating parameters including the catalyst bed temperature, space velocity and feed H2O/CO ratio were also investigated. Subjecting the samples to pretreatment with H2 or air had no strong effect on the catalytic activity. By varying the Pt loading, it was also found out that the maximum catalytic activity was achieved with the sample containing 1.2 wt% Pt, reaching up to 98 % CO conversion degree.

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Authors and Affiliations

  1. Institute of Catalysis, Bulgarian Academy of Sciences, 1113, Sofia, Bulgaria

    I. Ivanov, P. Petrova, V. Georgiev, T. Batakliev, Yordanka Karakirova, A. Eliyas & S. Rakovsky

  2. Institute of Inorganic Chemistry, Riga Technical University, Riga, 2169, Latvia

    V. Serga & L. Kulikova

Authors
  1. I. Ivanov
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  2. P. Petrova
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  3. V. Georgiev
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  4. T. Batakliev
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  5. Yordanka Karakirova
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  6. V. Serga
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  7. L. Kulikova
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  8. A. Eliyas
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  9. S. Rakovsky
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Corresponding author

Correspondence to P. Petrova.

Additional information

This work was supported by ESF (Grant BG051PO001-3.3.06-0050).

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Ivanov, I., Petrova, P., Georgiev, V. et al. Comparative Study of Ceria Supported Nano-sized Platinum Catalysts Synthesized by Extractive-Pyrolytic Method for Low-Temperature WGS Reaction. Catal Lett 143, 942–949 (2013). https://doi.org/10.1007/s10562-013-1078-3

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  • DOI: https://doi.org/10.1007/s10562-013-1078-3

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