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Comparison of dehydrocyclization reactions with Pt- and Pt-Sn alumina catalysts

Conference · · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)
OSTI ID:5725915
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-
Conference Information:
Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 28:2
Country of Publication:
United States
Language:
English