Model compound reforming studies: a comparison of alumina-supported platinum and iridium catalysts
Model compound reforming studies have been carried out over alumina-supported platinum and iridium catalysts. Cyclohexane and methylcyclopentane were selected to model the dehydrogenation and isomerization-dehydrogenation reactions, respectively, of naphthenes, while, n-heptane was chosen to model paraffin dehydrocyclization. Under typical reforming conditions, the conversion rates and selectivity patterns of these model compounds were found to be highly dependent upon the choice of metal. Platinum, for example, was found to be more active and selective for the aromatization of cyclohexane and methylcyclopentane than iridium. Iridium, in contrast, was observed to be a more active and selective n-heptane dehydrocyclization catalyst than platinum. Synthetic mixtures of model compounds were also investigated. These studies showed that paraffin dehydrocyclization is more strongly retarded by competitive adsorption processes than naphthene aromatization.
- Research Organization:
- Corporate Research Science Lab., Linden, NJ
- OSTI ID:
- 5359585
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 74:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
AROMATIZATION
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CATALYTIC REFORMING
CHALCOGENIDES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CONDENSED AROMATICS
CYCLOALKANES
CYCLOHEXANE
DATA
DEHYDROGENATION
ELEMENTS
EQUATIONS
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROCARBONS
INFORMATION
IRIDIUM
ISOMERIZATION
METALS
NAPHTHALENE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PLATINUM
PLATINUM METALS
PRESSURE COEFFICIENT
QUANTITATIVE CHEMICAL ANALYSIS
REACTIVITY COEFFICIENTS
REFORMER PROCESSES
TEMPERATURE EFFECTS
TRANSITION ELEMENTS