Surface texturing of Mo–V–Te–Nb–O x selective oxidation catalysts

Jakob B. Wagner, Olaf Timpe, Fazliana A. Hamid, Annette Trunschke, Ute Wild, Dang Sheng Su, Restu Kartiko Widi, Sharifah Bee Abd Hamid, Robert Schlögl

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The paper concentrates on the study of Mo–V–Te–Nb oxide mixtures by electron microscopy combined with catalytic investigation of these materials in the partial oxidation of propane. Surface texturing of catalyst particles composed of two phases referred to in the literature as M1 and M2 is revealed by high-resolution transmission electron microscopy of high performing catalysts. The chemical composition of the catalyst surface is modified by treatment in water to obtain a significant increment in yield of acrylic acid. A chemical realization of the site isolation concept recurring on a supramolecular arrangement of catalyst and reactant rather than on atomic site isolation is suggested. A complex Mo–V–Te–Nb–O x precursor phase carries nanoparticles made from a network of oxoclusters active as catalyst for the conversion of propane to acrylic acid. The designed synthesis of the multi-element oxide bulk and of the surface structure with a different composition than the precursor phase improved the performance by a factor of 4.
Original languageEnglish
JournalTopics in catalysis
Volume38
Issue number1-3
Pages (from-to)51-58
Number of pages8
ISSN1022-5528
DOIs
Publication statusPublished - 2006
Externally publishedYes
Event3rd Irsee Symposium - Kloster Irsee, Germany
Duration: 10 Jun 200512 Jun 2005
Conference number: 3

Conference

Conference3rd Irsee Symposium
Number3
CountryGermany
CityKloster Irsee
Period10/06/200512/06/2005

Keywords

  • catalyst model
  • heterogeneous catalysis
  • nanostructures
  • selective oxidation
  • surface analysis
  • Mo–V–Te–Nb oxide

Cite this

Wagner, J. B., Timpe, O., Hamid, F. A., Trunschke, A., Wild, U., Su, D. S., Widi, R. K., Hamid, S. B. A., & Schlögl, R. (2006). Surface texturing of Mo–V–Te–Nb–O x selective oxidation catalysts. Topics in catalysis, 38(1-3), 51-58. https://doi.org/10.1007/s11244-006-0070-1