ISSN:
1573-9171
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Conclusions 1. The cracking of paraffins over decationized type Y zeolites, mordenites, erionite, and high-silica zeolites (HSZ) occurs by the same route: paraffins → unsaturated fragments → paraffinic fragments and monoaromatic hydrocarbons → polyalkylaromatic (nondesorbed) compounds. 2. The extent of conversion of the intermediate products, and hence the selectivity of cracking, is determined for erionite by the geometrical parameters of the pore structure, and for type Y zeolites, mordenites, and HSZ, by the concentration of groups which include aluminum atoms in cationic positions. 3. On type Y zeolites with the greatest concentration of aluminum atoms in cationic positions, conversion of the hydrocarbons proceeds as far as the formation of nondesorbed compounds, and on HSZ with the lowest concentration of such sites, it proceeds as far as the formation of monoaromatic compounds.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00949779
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