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, A. Rédey

Research output: Contribution to journalArticle

Abstract

The synthesis of vanadium oxide systems (with 5 and 20 wt% V 2O 5 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 V 2O 5/γ-Al 2O 3 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
Publication statusPublished - Jan 2012

Fingerprint

dielectric property
Dielectric properties
aluminum oxide
inductively coupled plasma method
Alumina
combustion
catalyst
adsorption
Adsorption
Catalysts
Capacitance measurement
Inductively coupled plasma
vanadium
FTIR spectroscopy
Impregnation
Vanadium
Propylene
Catalyst activity
oxide
Spectroscopy

Keywords

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

ASJC Scopus subject areas

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

Cite this

In situ study of the electrical/dielectric properties of alumina supported vanadia used as combustion catalysts. / Scurtu, Mariana; Caldararu, Monica; Bratan, Veronica; Hornoiu, Cristian; Ionescu, Niculae I.; Yuzhakova, Tatiana; Rédey, A.

In: Environmental Engineering and Management Journal, Vol. 11, No. 1, 01.2012, p. 185-191.

Research output: Contribution to journalArticle

Scurtu, M, Caldararu, M, Bratan, V, Hornoiu, C, Ionescu, NI, Yuzhakova, T & Rédey, A 2012, 'In situ study of the electrical/dielectric properties of alumina supported vanadia used as combustion catalysts', Environmental Engineering and Management Journal, vol. 11, no. 1, pp. 185-191.
Scurtu, Mariana ; Caldararu, Monica ; Bratan, Veronica ; Hornoiu, Cristian ; Ionescu, Niculae I. ; Yuzhakova, Tatiana ; Rédey, A. / In situ study of the electrical/dielectric properties of alumina supported vanadia used as combustion catalysts. In: Environmental Engineering and Management Journal. 2012 ; Vol. 11, No. 1. pp. 185-191.
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