Quasi-Catalytic Identification of Intermediates in the Oxidation of Propene to Acrolein over a Multicomponent Bi-Mo Catalyst

Gennady I. Panov, Eugeny V. Starokon, Mikhail V. Parfenov, Beichen Wei, Vladimir I. Sobolev, Larisa V. Pirutko

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

The generally accepted three-step mechanism of propene oxidation to acrolein includes abstraction of two hydrogen atoms and addition of one oxygen atom. The first step is a well-known H-abstraction from the methyl group. The sequence of two other steps is unclear. We investigated the reaction in quasi-catalytic mode at 100-200 °C with extraction and analysis of accumulated surface products. The reaction intermediate, surface ether of allyl alcohol, was identified. This strongly proves that O-addition precedes the second H-abstraction. Activation energy and kinetic isotope effect of the quasi-catalytic reaction correlate with appropriate parameters of the conventional catalytic process.

Original languageEnglish
Pages (from-to)1173-1177
Number of pages5
JournalACS Catalysis
Volume8
Issue number2
DOIs
Publication statusPublished - 2 Feb 2018

Keywords

  • acrolein
  • allyl alcohol
  • bismuth molybdate
  • intermediate
  • kinetic isotope effect
  • product extraction
  • propene oxidation
  • quasi-catalytic approach
  • BISMUTH MOLYBDATE CATALYSTS
  • SELECTIVE OXIDATION
  • MECHANISM
  • ALPHA-OXYGEN
  • EPOXIDATION
  • FEZSM-5 ZEOLITE
  • SCHEELITE STRUCTURE
  • PROPYLENE
  • TRICOMPONENT METAL-OXIDES
  • MOLYBDENUM OXIDE

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