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Ammoxidation of toluene over molybdenum oxides

Andersson, Arne LU and Hansen, Staffan LU (1988) In Catalysis Letters 1(11). p.377-383
Abstract
The ammoxidation of toluene was studied both in presence and absence of gaseous oxygen over MoO3 and in situ prepared Mo4O11 (orth.) and MoO2. Irrespective of the partial pressure of oxygen, total reaction rates decrease in the following order: MoO3 > Mo4O11 > MoO2. The corresponding sequence for the selectivity towards formation of benzonitrile was found to depend on the partial pressure of oxygen. In two phase samples, no synergistic effects were observed for the formations of nitrile and carbon oxides. A comparison of rates for selective and nonselective products obtained in presence of gaseous oxygen with those obtained in its absence yield information as to whether the various products are formed at identical or different... (More)
The ammoxidation of toluene was studied both in presence and absence of gaseous oxygen over MoO3 and in situ prepared Mo4O11 (orth.) and MoO2. Irrespective of the partial pressure of oxygen, total reaction rates decrease in the following order: MoO3 > Mo4O11 > MoO2. The corresponding sequence for the selectivity towards formation of benzonitrile was found to depend on the partial pressure of oxygen. In two phase samples, no synergistic effects were observed for the formations of nitrile and carbon oxides. A comparison of rates for selective and nonselective products obtained in presence of gaseous oxygen with those obtained in its absence yield information as to whether the various products are formed at identical or different crystal faces. In the case of MoO3, nitrile and carbon oxides were found to be competitively formed at the same faces, while over MoO2 they are formed at different faces. Both options seem to prevail on (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Catalysis Letters
volume
1
issue
11
pages
377 - 383
publisher
Springer
external identifiers
  • scopus:0346516740
ISSN
1011-372X
DOI
10.1007/BF00766167
language
English
LU publication?
yes
id
5bd028ad-16e6-4cba-b051-11aaa9d22a10 (old id 3917025)
date added to LUP
2013-07-03 10:04:01
date last changed
2017-08-27 04:27:50
@article{5bd028ad-16e6-4cba-b051-11aaa9d22a10,
  abstract     = {The ammoxidation of toluene was studied both in presence and absence of gaseous oxygen over MoO3 and in situ prepared Mo4O11 (orth.) and MoO2. Irrespective of the partial pressure of oxygen, total reaction rates decrease in the following order: MoO3 > Mo4O11 > MoO2. The corresponding sequence for the selectivity towards formation of benzonitrile was found to depend on the partial pressure of oxygen. In two phase samples, no synergistic effects were observed for the formations of nitrile and carbon oxides. A comparison of rates for selective and nonselective products obtained in presence of gaseous oxygen with those obtained in its absence yield information as to whether the various products are formed at identical or different crystal faces. In the case of MoO3, nitrile and carbon oxides were found to be competitively formed at the same faces, while over MoO2 they are formed at different faces. Both options seem to prevail on},
  author       = {Andersson, Arne and Hansen, Staffan},
  issn         = {1011-372X},
  language     = {eng},
  number       = {11},
  pages        = {377--383},
  publisher    = {Springer},
  series       = {Catalysis Letters},
  title        = {Ammoxidation of toluene over molybdenum oxides},
  url          = {http://dx.doi.org/10.1007/BF00766167},
  volume       = {1},
  year         = {1988},
}