Kinetic study of propane oxidative dehydrogenation over a Ni-Co molybdate catalyst
(2003)
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- Authors
- Supervisors
- Thyrion, Fernand
- Abstract
- In the field of selective oxidation, the utilization of the alkanes as raw materials instead of the alkenes for the production of many chemicals (alkenes, aldehydes, nitriles and acids) is a recent and cheaper way. Unfortunately, nowadays only two transformations of the alkanes into more valuable products led to an industrial implementation. A kinetic study of the oxidative dehydrogenation of propane (ODHP) over a Ni-Co molybdate catalyst was carried out under steady-state and transient conditions. The influence of four variables (the partial pressures of propane and oxygen, the propane space-time and the temperature) over the propylene selectivity was derived. A consecutive reaction network was proposed in which propylene is obtained by the oxidehydrogenation of propane, while carbon monoxide and carbon dioxide are consequently produced by the propylene oxidation. The discrimination among 11 plausible models has revealed that two models type surface oxido-reduction are the most adequate for the ODHP. The results of transient step-response method confirmed a surface oxido-reduction mechanism and the competition between propane and propylene for the same adsorption sites.
- Affiliations
Citations
Barsan, M. (2003). Kinetic study of propane oxidative dehydrogenation over a Ni-Co molybdate catalyst. https://hdl.handle.net/2078.5/97858