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Kinetics and Mechanisms in the Ammoxidation of Toluene over a Titania TiO2(B)-Supported Vanadium Oxide Monolayer Catalyst. 2.Combustion Reactions

Sanati, Mehri LU and Andersson, Arne LU (1991) In Industrial & Engineering Chemistry Research 30(2). p.320-326
Abstract
To obtain knowledge about combustion mechanisms operating in the ammoxidation of toluene, the formation of carbon oxides was studied over a Ti02(B)-supported vanadium oxide catalyst with monolayer loading. The partial pressures of reactants were varied and kinetic rate expressions, completely describing experimental data, were derived. A comparison of the expressions obtained with those for the formation of nitrile and aldehyde shows that carbon oxides are formed at sites that are not involved in the mechanism of partial oxidation. Furthermore, C02 and CO are formed in routes having a common type of active ensemble. All of the adsorption steps are fast and in equilibrium. For the formation of C02 and CO, the rate-limiting step in both... (More)
To obtain knowledge about combustion mechanisms operating in the ammoxidation of toluene, the formation of carbon oxides was studied over a Ti02(B)-supported vanadium oxide catalyst with monolayer loading. The partial pressures of reactants were varied and kinetic rate expressions, completely describing experimental data, were derived. A comparison of the expressions obtained with those for the formation of nitrile and aldehyde shows that carbon oxides are formed at sites that are not involved in the mechanism of partial oxidation. Furthermore, C02 and CO are formed in routes having a common type of active ensemble. All of the adsorption steps are fast and in equilibrium. For the formation of C02 and CO, the rate-limiting step in both cases comprises a chemical transformation of which the details are unknown. The introduction of ammonia leads to a strong decrease of the rates for formation of carbon oxides. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Industrial & Engineering Chemistry Research
volume
30
issue
2
pages
320 - 326
publisher
The American Chemical Society
external identifiers
  • WOS:A1991EW60700007
  • Scopus:0026112836
ISSN
0888-5885
DOI
10.1021/ie00050a007
language
English
LU publication?
yes
id
ce38f880-7832-46f2-8bcd-15a0aa0b9636 (old id 2005726)
date added to LUP
2011-06-30 13:58:56
date last changed
2016-11-20 04:26:37
@misc{ce38f880-7832-46f2-8bcd-15a0aa0b9636,
  abstract     = {To obtain knowledge about combustion mechanisms operating in the ammoxidation of toluene, the formation of carbon oxides was studied over a Ti02(B)-supported vanadium oxide catalyst with monolayer loading. The partial pressures of reactants were varied and kinetic rate expressions, completely describing experimental data, were derived. A comparison of the expressions obtained with those for the formation of nitrile and aldehyde shows that carbon oxides are formed at sites that are not involved in the mechanism of partial oxidation. Furthermore, C02 and CO are formed in routes having a common type of active ensemble. All of the adsorption steps are fast and in equilibrium. For the formation of C02 and CO, the rate-limiting step in both cases comprises a chemical transformation of which the details are unknown. The introduction of ammonia leads to a strong decrease of the rates for formation of carbon oxides.},
  author       = {Sanati, Mehri and Andersson, Arne},
  issn         = {0888-5885},
  language     = {eng},
  number       = {2},
  pages        = {320--326},
  publisher    = {ARRAY(0xa105f68)},
  series       = {Industrial & Engineering Chemistry Research},
  title        = {Kinetics and Mechanisms in the Ammoxidation of Toluene over a Titania TiO2(B)-Supported Vanadium Oxide Monolayer Catalyst. 2.Combustion Reactions},
  url          = {http://dx.doi.org/10.1021/ie00050a007},
  volume       = {30},
  year         = {1991},
}