Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By condensation of entire molecules or entire hydrocarbyl...
Patent
1984-12-10
1990-02-06
Dixon, Jr., William R.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By condensation of entire molecules or entire hydrocarbyl...
585470, 585471, C07C 268
Patent
active
048990078
ABSTRACT:
There are provided aromatic conversion reactions for preparation of dialkyl benzenes, such as xylene and ethyltoluene, of enhanced para isomer content with a zeolitic catalyst composition of improved shape selectivity. The catalysts comprise certain zeolites which have been calcined at a high temperature of at least 649.degree. C. (i.e., 1200.degree. F.). These zeolites have a silica/alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12. Examples of such zeolites include ZSM-5 and ZSM-11.
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Chu Pochen
Dwyer Francis G.
Schwartz Albert B.
Dixon Jr. William R.
Kenehan, Jr. Edward F.
McKillop Alexander J.
Mobil Oil Corporation
Nguyen Maria Reardon
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