Effect of Fe, Ga, Ti and Nb substitution in approximate to SbVO4 for propane ammoxidation
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1870223
- author
- Wickman, Andreas and Andersson, Arne LU
- organization
- publishing date
- 2011
- type
- 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
- 2016-04-01 13:16:12
- date last changed
- 2023-09-02 21:21:51
@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}},
keywords = {{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}},
doi = {{10.1016/j.apcata.2010.04.041}},
volume = {{391}},
year = {{2011}},
}