Structure-activity relationships in alumina-supported molybdena-vanadia catalysts for propane oxidative dehydrogenation

Miguel A. Bañares, Sheima J. Khatib

Research output: Contribution to journalArticle

74 Scopus citations

Abstract

The interactions between Mo and V on alumina are studied for the oxidative dehydrogenation (ODH) of propane. Dispersed surface molybdena and vanadia species share alumina support but show no interaction below Mo + V monolayer coverage. Vanadia and molybdena species react on alumina into mixed Mo-V-(Al)-O above Mo + V monolayer coverage, which nature depends on environmental conditions. Molybdena sites may form Al2(MoO4)3 or Mo-V-O phases depending on loading and temperature. The Mo-V-O phases spread on the support as separate surface oxides at lower coverage, such trend appears promoted by ODH reaction conditions.

Original languageEnglish
Pages (from-to)251-257
Number of pages7
JournalCatalysis Today
Volume96
Issue number4
DOIs
StatePublished - Oct 13 2004

Keywords

  • Mixed oxides
  • Molybdena
  • ODH
  • Operando
  • Propane
  • Raman
  • Structure-activity relationships
  • Vanadia

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