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Reaction Kinetics, Mechanisms and Catalysis

, Volume 113, Issue 1, pp 149–158 | Cite as

One-step preparation of Pt–Ce and Pt–Sn–Ce/Al2O3 catalysts by flame spray pyrolysis in propane dehydrogenation

  • Sukanya Pisduangdaw
  • Piyasan Praserthdam
  • Joongjai Panpranot
  • Okorn Mekasuwandumrong
Article

Abstract

Nanocrystalline Pt–Ce/Al2O3 and Pt–Sn–Ce/Al2O3 catalysts with various Ce loading contents have been prepared by one-step flame spray pyrolysis (FSP). The resulting nanopowders consisted of spherical single-crystalline γ-alumina particles with as-prepared primary particle size of 8–10 nm. The N2 physisorption results revealed that all the flame-made catalysts contained only the macropore structure. The catalytic properties of the FSP-made catalysts were investigated in the dehydrogenation of propane. The results show that the Ce addition could greatly improve the catalytic performance and catalytic stability of the Pt–Ce/Al2O3 and Pt–Sn–Ce/γ-Al2O3 and optimal Ce loading contents was 1 wt%. This could be due to better Pt dispersion and change in metal/support interaction after Ce loading.

Keywords

Flame spray pyrolysis Pt–Sn–Ce/Al2O3 Propane dehydrogenation Doping 

Notes

Acknowledgments

Financial supports from the The Ratchadaphiseksomphot Endowment Fund of Chulalongkorn University (Advanced Materials Cluster) are gratefully acknowledged.

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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2014

Authors and Affiliations

  • Sukanya Pisduangdaw
    • 1
  • Piyasan Praserthdam
    • 1
  • Joongjai Panpranot
    • 1
  • Okorn Mekasuwandumrong
    • 2
  1. 1.Department of Chemical Engineering, Faculty of Engineering, Center of Excellence on Catalysis and Catalytic Reaction EngineeringChulalongkorn UniversityBangkokThailand
  2. 2.Department of Chemical Engineering, Faculty of Engineering and Industrial TechnologySilpakorn UniversityNakhon PathomThailand

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