Structural characterization of high-performance catalysts for partial oxidation—the high-resolution and analytical electron microscopy approach

Jakob Birkedal Wagner, Dang Sheng Su, Stephan A. Schunk, Hartmut Hibst, Jochen Petzoldt, Robert Schlögl

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

A set of Mo, V, and W mixed-oxide samples with additives P and Cs showing high performance in selective partial oxidation of propene is studied by means of elemental mapping and crystal structure determination using scanning and transmission electron microscopy, energy-dispersive X-ray spectroscopy (EDS), and electron energy loss spectroscopy (EELS) as supplement to XRD measurements which are insufficient for phase determination. The set is divided into two subsets of samples denoted A and B, where subset A samples show the highest performance in selective partial oxidation of propene. These high-performance catalysts are all predominated by structures of the Mo5O14 type in contrast to a negligible amount of the orthorhombic MoO3, which is known to favor total oxidation.
Original languageEnglish
JournalJournal of Catalysis
Volume224
Issue number1
Pages (from-to)28-35
Number of pages8
ISSN0021-9517
DOIs
Publication statusPublished - 2004
Externally publishedYes

Keywords

  • Molybdenum oxide
  • Partial oxidation
  • Structure determination
  • HREM
  • EELS
  • EDS

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