6533b830fe1ef96bd129675c
RESEARCH PRODUCT
Kinetic Study of the Oxidation of n-Butane on Vanadium Oxide Supported on Al/Mg Mixed Oxide
Jose M. Lopez NietoAnd Francisco MeloAna DejozIsabel Vázquezsubject
Reaction mechanismGeneral Chemical EngineeringInorganic chemistryButaneGeneral ChemistryRedoxIndustrial and Manufacturing EngineeringVanadium oxideCatalysisChemical kineticschemistry.chemical_compoundchemistryMixed oxideDehydrogenationdescription
The reaction kinetics of the oxidative dehydrogenation (ODH) of n-butane over vanadia supported on a heat-treated Mg/Al hydrotalcite (37.3 wt % of V2O5) was investigated by both linear and nonlinear regression techniques. A reaction network including the formation of butenes (1-, 2-cis-, and 2-trans-butene), butadiene, and carbon oxides by parallel and consecutive reactions, at low and high n-butane conversions, has been proposed. Langmuir−Hinshelwood (LH) models can be used as suitable models which allows reproduction of the global kinetic behavior, although differences between oxydehydrogenation and deep oxidation reactions have been observed. Thus, the formation of oxydehydrogenation products can be described by a LH equation considering a dissociative adsorption of oxygen while the formation of carbon oxides is described by a LH equation with a nondissociative adsorption of oxygen. Two different mechanisms operate on the catalyst: (i) a redox mechanism responsible of the formation of olefins and diol...
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-07-01 |