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Oxygen partial pressure effects on the oxidative dehydrogenation of propane
Luleå tekniska universitet.
Chalmers University of Technology.
University of Waterloo.
University of Waterloo.
1999 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 54, no 20, p. 4365-4370Article in journal (Refereed) Published
Abstract [en]

The effect of the gas-phase oxygen partial pressure for the oxidative dehydrogenation of propane over a V-Mg-O catalyst was investigated to explore reasons for improved propene yields when dehydrogenation was carried out under periodic operation. Steady-state experiments were performed in which the oxygen partial pressure was varied over a large range at constant propane partial pressures. In addition, the catalyst mass was varied to control the propane conversion so that selectivity and yield could be compared at a constant propane conversion. At the same propane conversion, propene selectivity increased as the partial pressure of oxygen decreased. Thus, propene yields can be improved at steady state by employing low oxygen partial pressures. It is likely that this is the reason for the higher propene yields observed under unsteady-state or periodic operation. It appears that the reaction mechanism must consist of more than one pathway for production of carbon oxides

Place, publisher, year, edition, pages
1999. Vol. 54, no 20, p. 4365-4370
National Category
Chemical Process Engineering
Research subject
Chemical Technology
Identifiers
URN: urn:nbn:se:ltu:diva-8545DOI: 10.1016/S0009-2509(99)00108-6ISI: 000081864700010Scopus ID: 2-s2.0-0032586587Local ID: 70f25430-2d61-11dd-9c9b-000ea68e967bOAI: oai:DiVA.org:ltu-8545DiVA, id: diva2:981483
Note
Godkänd; 1999; 20080529 (cira)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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