In situ study of the electrical/dielectric properties of alumina supported vanadia used as combustion catalysts

Mariana Scurtu, Monica Caldararu, Veronica Bratan, Cristian Hornoiu, Niculae I. Ionescu, Tatiana Yuzhakova, Ákos Rédey

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The synthesis of vanadium oxide systems (with 5 and 20 wt% V2O5 loadings) supported on commercial γ-alumina was carried out by a wet impregnation method. The samples were characterized by low-temperature nitrogen adsorption (BET), inductively coupled plasma (ICP) method and by in situ electrical conductance/capacitance measurements. The adsorption of CO was used to investigate the acidic properties of alumina support and V2O5/γ-Al2O3 catalysts by FTIR spectroscopy. The catalytic activities of the samples were tested in propylene oxidation reaction, in the temperature range of 30-400°C. The electrical/dielectric properties of the support strongly influence the surface behavior of the supported phase.

Original languageEnglish
Pages (from-to)185-191
Number of pages7
JournalEnvironmental Engineering and Management Journal
Volume11
Issue number1
DOIs
Publication statusPublished - Jan 2012

Keywords

  • Conductance
  • Dielectric constant
  • Propylene oxidation
  • Vanadium oxide
  • γ-alumina

ASJC Scopus subject areas

  • Environmental Engineering
  • Pollution
  • Management, Monitoring, Policy and Law

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