Active site of praseodymium orthovanadate catalyst in oxidative dehydrogenation of propane

Weide Zhang*, Chak Tong AU, Huilin Wan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The pure phase of praseodymium orthovanadate (PrVO4) has been prepared by the citrate method. The active site of Pr-VO4 was studied by ESR, NO-TPD, O2-TPD and 18O2-isotope exchange methods. The results of ESR and NO-TPD confirmed the presence of V4+ in the catalyst. 18O2-isotope exchange was through a single exchange procedure. From the result of O2 + TPD and the kinetic study of 18O2-isotope exchange, one can reach a conclusion that the V4+ species associated with oxygen vacancies are the site for O2 activation. The adsorbed O2 or O- are the active oxygen species in propane oxidative dehydrogenation.

Original languageEnglish
Pages (from-to)217-220
Number of pages4
JournalChinese Science Bulletin
Volume43
Issue number3
DOIs
Publication statusPublished - Feb 1998

Scopus Subject Areas

  • General

User-Defined Keywords

  • Active site
  • Catalyst
  • Praseodymium orthovanadate
  • Propane oxidative dehydrogenation

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