One-step synthesis of bismuth molybdate catalysts via flame spray pyrolysis for the selective oxidation of propylene to acrolein

K. Schuh, W. Kleist, Martin Høj, V. Trouillet, Anker Degn Jensen, J. -D. Grunwaldt

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Flame spray pyrolysis (FSP) of Bi(III)-and Mo(VI)-2-ethylhexanoate dissolved in xylene resulted in various nanocrystalline bismuth molybdate phases depending on the Bi/Mo ratio. Besides alpha-Bi2Mo3O12 and gamma-Bi2MoO6, FSP gave direct access to the metastable beta-Bi2Mo2O9 phase with high surface area (19 m(2) g(-1)). This phase is normally only obtained at high calcination temperatures (>560 degrees C) resulting in lower surface areas. The beta-phase was stable up to 400 degrees C and showed superior catalytic performance compared to alpha- and gamma-phases in selective oxidation of propylene to acrolein at temperatures relevant for industrial applications (360 degrees C).
Original languageEnglish
JournalChemical Communications
Volume50
Issue number97
Pages (from-to)15404-15406
Number of pages3
ISSN1359-7345
DOIs
Publication statusPublished - 2014

Keywords

  • CHEMISTRY,
  • SURFACE-AREA
  • GAMMA-PHASE
  • BETA-PHASE
  • OXIDE
  • NANOPARTICLES
  • BI2MO3O12
  • KINETICS
  • SYSTEM

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