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

Wagner, Jakob LU ; Timpe, Olaf; Hamid, Fazliana A; Trunschke, Annette; Wild, Ute; Su, Dang Sheng; Widi, Restu Kartiko; Abd Hamid, Sharifah Bee and Schloegl, Robert (2006) In Topics in Catalysis 38(1-3). p.51-58
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... (More)
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. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Mo-V-Te-Nb oxide, surface analysis, oxidation, selective, nanostructures, catalyst model, heterogeneous catalysis
in
Topics in Catalysis
volume
38
issue
1-3
pages
51 - 58
publisher
Kluwer
external identifiers
  • wos:000239592200007
  • scopus:33749050428
ISSN
1572-9028
DOI
10.1007/s11244-006-0070-1
language
English
LU publication?
yes
id
ab1396a6-eb65-4402-aafe-d0d093e21533 (old id 398638)
date added to LUP
2007-10-12 14:59:04
date last changed
2018-07-08 04:00:14
@article{ab1396a6-eb65-4402-aafe-d0d093e21533,
  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.},
  author       = {Wagner, Jakob and Timpe, Olaf and Hamid, Fazliana A and Trunschke, Annette and Wild, Ute and Su, Dang Sheng and Widi, Restu Kartiko and Abd Hamid, Sharifah Bee and Schloegl, Robert},
  issn         = {1572-9028},
  keyword      = {Mo-V-Te-Nb oxide,surface analysis,oxidation,selective,nanostructures,catalyst model,heterogeneous catalysis},
  language     = {eng},
  number       = {1-3},
  pages        = {51--58},
  publisher    = {Kluwer},
  series       = {Topics in Catalysis},
  title        = {Surface texturing of Mo-V-Te-Nb-O-x selective oxidation catalysts},
  url          = {http://dx.doi.org/10.1007/s11244-006-0070-1},
  volume       = {38},
  year         = {2006},
}