Isomerization of pentane with AlCl/sub 3//CuSO/sub 4/ mixtures
Isomerization of pentane with AlCl/sub 3//CuSO/sub 4/ mixtures in batch operation at 5/sup 0/-23/sup 0/C was zero order in n-pentene, had an activation energy of 94 kj/mole, and yielded isopentane as the main product and increasing amounts of 2,2-dimethylbutane, 2,3-dimethylbutane, and other hexanes with increasing reaction time. The n-pentane conversion rate depended on the surface area of the cupric sulfate which had a maximum at 350/sup 0/C dehydration temperature. Catalysts containing an aluminum chloride/cupric sulfate ratio of < 1:5 were inactive, but the activity increased suddenly with increasing aluminum chloride contents of the catalysts. Addition of water to the system inhibited the cupric sulfate activity if the water/cupric sulfate molar ratio was > 1:1. The addition of water to aluminum chloride/n-pentane slightly activated the otherwise inactive aluminum chloride. The acid strength of the aluminum chloride/cupric sulfate mixture was -14.52 to -13.75 H/sub o/, compared with -13.75 to -13.16 H/sub o/ for the pure aluminum chloride and no strong acid sites on the sulfate. Under similar conditions, the conversion of hexane yielded 2-methylpentane, isopentane, and isobutane as main products, and the catalyst deactivated after approx. 10 mole of hexane/mole catalyst were converted.
- Research Organization:
- Tokyo Inst. Technol.
- OSTI ID:
- 6321116
- Journal Information:
- J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 64:1; ISSN JCTLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACTIVATION ENERGY
ALKANES
ALUMINIUM CHLORIDES
ALUMINIUM COMPOUNDS
CATALYSTS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COMPARATIVE EVALUATIONS
COPPER COMPOUNDS
COPPER SULFATES
ENERGY
HALIDES
HALOGEN COMPOUNDS
HYDROCARBONS
HYDROGEN COMPOUNDS
ISOMERIZATION
KINETICS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PENTANE
PH VALUE
REACTION KINETICS
SULFATES
SULFUR COMPOUNDS
SURFACE AREA
SURFACE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
WATER