Sonochemically prepared Pt/CeO2 and its application as a catalyst in ethyl acetate combustion

Nina Perkas, Hadar Rotter, Leonid Vradman, Miron V. Landau, Aharon Gedanken

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

Highly dispersed Pt nanoparticles were incorporated in CeO2 nanopowders by an ultrasound-assisted reduction procedure. The activity of the Pt/CeO2 catalysts was studied in the reaction of the ethyl acetate combustion, and complete conversion was achieved at low temperature. It was demonstrated that the higher dispersion of the CeO2 support, the better the performance of the Pt/CeO2 catalysts. The catalysts were characterized by XRD, TEM, HRTEM, EDX, BET, and XPS. The homogeneous incorporation of 2-4 nm Pt nanoparticles into the interparticle distance of the CeO2 nanopowders was demonstrated. The advantage of the sonochemical method for catalyst preparation, in comparison with the traditional incipient wetness impregnation, was explained as the result of the homogeneity and better dispersion of the active metal phase obtained by ultrasound irradiation.

Original languageEnglish
Pages (from-to)7072-7077
Number of pages6
JournalLangmuir
Volume22
Issue number16
DOIs
StatePublished - 1 Aug 2006

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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