A Transient Response Study of the Ammoxidation of Propene and Propane on an Sb-V-Oxide Catalyst
(1997) In Industrial & Engineering Chemistry Research 36(12). p.5207-5217- Abstract
- The reaction pathways in the ammoxidation of propene and of propane over an Sb-V-oxide catalyst were studied by analyzing the modes of transient responses of reactants and products resulting from step changes from inert gas to reactant feed. The pathway from propane to acrylonitrile begins with the oxidative dehydrogenation of propane to form propene. After readsorption, the propene is then transformed into adsorbed acrolein, which eventually reacts with an NHx surface species to form acrylonitrile. The adsorption of propane is rate limiting for the propane conversion, but the desorption of water formed from the propene is slow and determines the product distribution. The response modes for the direct oxidation and ammoxidation of propene... (More)
- The reaction pathways in the ammoxidation of propene and of propane over an Sb-V-oxide catalyst were studied by analyzing the modes of transient responses of reactants and products resulting from step changes from inert gas to reactant feed. The pathway from propane to acrylonitrile begins with the oxidative dehydrogenation of propane to form propene. After readsorption, the propene is then transformed into adsorbed acrolein, which eventually reacts with an NHx surface species to form acrylonitrile. The adsorption of propane is rate limiting for the propane conversion, but the desorption of water formed from the propene is slow and determines the product distribution. The response modes for the direct oxidation and ammoxidation of propene are consistent with the desorption of water being rate limiting. A comparison of the experimental responses viith responses simulated under the assumption that the formation of an allylic intermediate is rate determining reveals an important difference in profiles, indicating this step to not be rate determining. The results show that substantial qualitative information concerning the reaction pathways can be obtained from the analysis of transient profile modes. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/35839
- author
- Nilsson, Roland and Andersson, Arne LU
- organization
- publishing date
- 1997
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Industrial & Engineering Chemistry Research
- volume
- 36
- issue
- 12
- pages
- 5207 - 5217
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- wos:A1997YJ88100022
- scopus:0031364302
- ISSN
- 0888-5885
- DOI
- 10.1021/ie970226j
- language
- English
- LU publication?
- yes
- id
- ed8fdc74-a715-4ecb-9809-8ef401fe8442 (old id 35839)
- date added to LUP
- 2016-04-01 16:21:41
- date last changed
- 2023-09-04 17:20:51
@article{ed8fdc74-a715-4ecb-9809-8ef401fe8442,
abstract = {{The reaction pathways in the ammoxidation of propene and of propane over an Sb-V-oxide catalyst were studied by analyzing the modes of transient responses of reactants and products resulting from step changes from inert gas to reactant feed. The pathway from propane to acrylonitrile begins with the oxidative dehydrogenation of propane to form propene. After readsorption, the propene is then transformed into adsorbed acrolein, which eventually reacts with an NHx surface species to form acrylonitrile. The adsorption of propane is rate limiting for the propane conversion, but the desorption of water formed from the propene is slow and determines the product distribution. The response modes for the direct oxidation and ammoxidation of propene are consistent with the desorption of water being rate limiting. A comparison of the experimental responses viith responses simulated under the assumption that the formation of an allylic intermediate is rate determining reveals an important difference in profiles, indicating this step to not be rate determining. The results show that substantial qualitative information concerning the reaction pathways can be obtained from the analysis of transient profile modes.}},
author = {{Nilsson, Roland and Andersson, Arne}},
issn = {{0888-5885}},
language = {{eng}},
number = {{12}},
pages = {{5207--5217}},
publisher = {{The American Chemical Society (ACS)}},
series = {{Industrial & Engineering Chemistry Research}},
title = {{A Transient Response Study of the Ammoxidation of Propene and Propane on an Sb-V-Oxide Catalyst}},
url = {{http://dx.doi.org/10.1021/ie970226j}},
doi = {{10.1021/ie970226j}},
volume = {{36}},
year = {{1997}},
}