Comparison of dehydrocyclization reactions with Pt- and Pt-Sn alumina catalysts
In order to improve the upgrading of naphtha to high octane gasoline, the dehydrocyclization of n-octane, n-propylcyclopentane and isooctanes at atmospheric (482/sup 0/C) and 400 psig (500/sup 0/C) pressure has been compared using acidic and neutral Pt/Al/sub 2/O/sub 3/ and Pt-Sn/Al/sub 2/O/sub 3/ catalysts. Data for conversions, and product distribution (ethyl benzene, xylene isomers, total aromatics) are presented and are similar to those predicted by cyclohexane formation from n-octane rather than by n-propyl cyclopentane formation. Although less active than the Pt catalyst, the Pt-Sn catalyst gave lower alkane: aromatic ratios at 400 psig. Tin improves both dehydrocyclization activity and ageing rate of Pt catalysts. Radiotracer studies of these systems are in progress.
- Research Organization:
- Univ. of Kentucky, Lexington
- OSTI ID:
- 5725915
- Report Number(s):
- CONF-830303-
- Journal Information:
- Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States), Vol. 28:2; Conference: 185. American Chemical Society national meeting, Seattle, WA, USA, 20 Mar 1983
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ALKANES
AROMATIZATION
CATALYTIC REFORMING
CHEMICAL PREPARATION
ISOMERIZATION
CYCLOALKANES
CYCLOALKENES
OCTANE
PLATINUM
CATALYTIC EFFECTS
TIN
XYLENES
ALUMINIUM OXIDES
ANTIKNOCK RATINGS
CATALYSTS
COMPARATIVE EVALUATIONS
DEHYDROGENATION
GASOLINE
MEDIUM PRESSURE
NAPHTHA
PH VALUE
PRESSURE DEPENDENCE
REACTION INTERMEDIATES
ALKENES
ALUMINIUM COMPOUNDS
AROMATICS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL TAR OILS
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROCARBONS
LIQUID FUELS
METALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PLATINUM METALS
REFORMER PROCESSES
SYNTHESIS
TRANSITION ELEMENTS
020400* - Petroleum- Processing
400800 - Combustion
Pyrolysis
& High-Temperature Chemistry