Reaction Pathways in Acrolein Oxidation over a Mixed-Oxide Catalyst

Jacob H. Miller, Aditya Bhan

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

A reaction network detailing the mechanistic origins of 17 C1−C7 byproducts in acrolein oxidation over a vanadium molybdate mixed oxide catalyst doped with antimony and copper is proposed based on measurements of acrolein oxidation rates with co-feeds of C1−C7 organics formed as byproducts, acrylic acid 13C isotopic tracer experiments, and probe molecule reactions. C1 and C2 products form via C−C bond scission of either the single or double C−C bond in acrolein and acrylic acid. C4−C7 products form by addition of one or two acrolein or acrylic acid molecules to a C2 surface species coupled with decarbonylation or decarboxylation events. Two-carbon ethyl and vinyl surface species and three-carbon acrolein-derived surface species are involved in all pathways that lead to byproduct formation; controlling the relative abundance and reactivity of such intermediates is integral to prescribing process conditions and material compositions for selective oxidation of acrolein.

Original languageEnglish (US)
Pages (from-to)5242-5255
Number of pages14
JournalChemCatChem
Volume10
Issue number22
DOIs
StatePublished - Nov 22 2018

Bibliographical note

Funding Information:
The authors acknowledge financial support from The Dow Chemical Company as well as a departmental fellowship sponsored by 3M. The authors also acknowledge Mr. Linh Bui, University of Minnesota, and Dr. Joseph DeWilde, The Dow Chemical Company, for valuable technical insights.

Publisher Copyright:
© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Keywords

  • acrolein
  • acrylic acid
  • partial oxidation
  • reaction pathways
  • reducible oxide

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