Chemistry of hydrocarbon compounds – Aromatic compound synthesis – By alkyl or aryl transfer between molecules – e.g.,...
Patent
1987-05-18
1988-02-02
Davis, Curtis R.
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
By alkyl or aryl transfer between molecules, e.g.,...
C07C 362
Patent
active
047230495
ABSTRACT:
A process for the disproportionation of a toluene containing feedstock over an aluminum deficient mordenite catalyst having a silica/alumina mole ratio of at least 30. The feedstock and hydrogen co-feed are supplied to a reaction zone containing the mordenite catalyst and which is operated under a temperature and pressure condition to effect the disproportionation of toluene to benzene and xylene. The supply of toluene feedstock to the reaction zone is interrupted while continuing the supply of hydrogen to the reaction zone. By continuing the supply of hydrogen to the reaction zone during periods of interruption of the toluene feedstock, the aging quality of the aluminum-deficient mordenite catalyst is improved.
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Bhavikatti et al, "Toluene Disproportionation over Aluminum-Deficient and Metal-Loaded Mordenites. 1. Catalytic Activity and Aging", Ind. Eng. Chem. Prod. Res. Dev., 1981, 102-105.
Cotten, Jr. Eugene W.
Menard Kevin P.
Abokhair John K.
Cheairs M. Norwood
Cosden Technology, Inc.
Davis Curtis R.
Jackson William D.
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