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Effect of Fe, Ga, Ti and Nb substitution in approximate to SbVO4 for propane ammoxidation

Wickman, Andreas and Andersson, Arne LU (2011) In Applied Catalysis A: General 391(1-2). p.110-117
Abstract
Substitution in rutile-type approximate to SbVO4 was made with Fe3+ and Ga3+ replacing V3+, and Nb5+ replacing Sb5+. Moreover, preparations with Ti were synthesised where Ti4+ ions substitute for both V4+ and V3+/Sb5+ pairs approximate to SbVO4-related phases containing Ti together with Fe and Ga were also prepared. The samples were characterised using X-ray diffraction, DRIFT and Raman spectroscopy. The characterisations show the formation of a cation deficient single rutile-type phase. Use of the samples in propane ammoxidation to produce acrylonitrile reveals, compared with the pure approximate to SbVO4 phase, that Fe, Ga and Ti substitution in approximate to SbVO4 results in lower activity but considerably higher selectivity to... (More)
Substitution in rutile-type approximate to SbVO4 was made with Fe3+ and Ga3+ replacing V3+, and Nb5+ replacing Sb5+. Moreover, preparations with Ti were synthesised where Ti4+ ions substitute for both V4+ and V3+/Sb5+ pairs approximate to SbVO4-related phases containing Ti together with Fe and Ga were also prepared. The samples were characterised using X-ray diffraction, DRIFT and Raman spectroscopy. The characterisations show the formation of a cation deficient single rutile-type phase. Use of the samples in propane ammoxidation to produce acrylonitrile reveals, compared with the pure approximate to SbVO4 phase, that Fe, Ga and Ti substitution in approximate to SbVO4 results in lower activity but considerably higher selectivity to acrylonitrile at the same level of propane conversion. Niobium substitution, on the contrary, gives no improved catalytic properties. Correlations are presented between the catalytic and structural properties of the catalysts. It is demonstrated that isolation in the structure of the propane activating V-O. sites in a surrounding of nitrogen inserting Sb-sites results in improved selectivity for acrylonitrile formation. (C) 2010 Elsevier B.V. All rights reserved. (Less)
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organization
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Contribution to journal
publication status
published
subject
keywords
Propane ammoxidation, Acrylonitrile, Sb-V-oxide based catalysts, approximate to SbVO4, Substitutions with Fe, Ga, Ti and Nb, XRD, DRIFT, Raman spectroscopy
in
Applied Catalysis A: General
volume
391
issue
1-2
pages
110 - 117
publisher
Elsevier
external identifiers
  • wos:000286856600015
  • scopus:78650924388
ISSN
0926-860X
DOI
10.1016/j.apcata.2010.04.041
language
English
LU publication?
yes
id
db788622-3ff7-4d98-83ab-a9b8c48c54d0 (old id 1870223)
date added to LUP
2011-04-19 10:56:21
date last changed
2017-01-01 05:34:12
@article{db788622-3ff7-4d98-83ab-a9b8c48c54d0,
  abstract     = {Substitution in rutile-type approximate to SbVO4 was made with Fe3+ and Ga3+ replacing V3+, and Nb5+ replacing Sb5+. Moreover, preparations with Ti were synthesised where Ti4+ ions substitute for both V4+ and V3+/Sb5+ pairs approximate to SbVO4-related phases containing Ti together with Fe and Ga were also prepared. The samples were characterised using X-ray diffraction, DRIFT and Raman spectroscopy. The characterisations show the formation of a cation deficient single rutile-type phase. Use of the samples in propane ammoxidation to produce acrylonitrile reveals, compared with the pure approximate to SbVO4 phase, that Fe, Ga and Ti substitution in approximate to SbVO4 results in lower activity but considerably higher selectivity to acrylonitrile at the same level of propane conversion. Niobium substitution, on the contrary, gives no improved catalytic properties. Correlations are presented between the catalytic and structural properties of the catalysts. It is demonstrated that isolation in the structure of the propane activating V-O. sites in a surrounding of nitrogen inserting Sb-sites results in improved selectivity for acrylonitrile formation. (C) 2010 Elsevier B.V. All rights reserved.},
  author       = {Wickman, Andreas and Andersson, Arne},
  issn         = {0926-860X},
  keyword      = {Propane ammoxidation,Acrylonitrile,Sb-V-oxide based catalysts,approximate to SbVO4,Substitutions with Fe,Ga,Ti and Nb,XRD,DRIFT,Raman spectroscopy},
  language     = {eng},
  number       = {1-2},
  pages        = {110--117},
  publisher    = {Elsevier},
  series       = {Applied Catalysis A: General},
  title        = {Effect of Fe, Ga, Ti and Nb substitution in approximate to SbVO4 for propane ammoxidation},
  url          = {http://dx.doi.org/10.1016/j.apcata.2010.04.041},
  volume       = {391},
  year         = {2011},
}