Influence of the reactant gas on the electrical properties of alumina-supported tin dioxide catalysts

M. Scurtu, C. Hornoiu, M. Caldararu, C. Munteanu, G. Postole, N. I. Ionescu, T. Yuzhakova, A. Redey

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The surface dynamics of SnO 2/γ-Al 2O 3 catalysts with different tin dioxide loadings (3 and 20 wt%) prepared by the impregnation method were investigated by using in situ electrical/dielectric measurements. The samples were characterized by BET, inductively coupled plasma atomic emission spectroscopy and X-ray diffraction methods. The propylene oxidation reaction, in the temperature range of 30-400 °C, was used to identify the catalytic activity of SnO 2 based catalysts. Results are discussed on the bases of the electrical changes accompanying variation of the active phase content. The conductance/capacitance of supported samples evidenced the reciprocal influence of the support and of the guest oxide.

Original languageEnglish
Pages (from-to)163-172
Number of pages10
JournalReaction Kinetics, Mechanisms and Catalysis
Volume105
Issue number1
DOIs
Publication statusPublished - Feb 1 2012

Keywords

  • AC electrical conductivity
  • Propylene oxidation
  • Tin dioxide
  • γ-Alumina

ASJC Scopus subject areas

  • Catalysis
  • Physical and Theoretical Chemistry

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