Selective alkylation of xylenes with ethylene

Details Selective alkylation of xylenes with ethylene Selective alkylation of xylenes with ethylene

1982-06-23

1986-04-22

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

585481, C07C 352

Patent

active

045844224

ABSTRACT:
A process for the production of 3,4-dimethyl-1-ethylbenzene by selective alkylation of dimethylbenzene with ethylene. The process is carried out in the presence of a crystalline zeolite catalyst having a silica to alumina mole ratio of at least about 12 and a Constraint Index of greater than 2 and up to about 12.

REFERENCES:
patent: 3855331 (1974-12-01), Moss, Jr. et al.
patent: 4094921 (1978-06-01), Kaeding et al.
patent: 4100214 (1978-07-01), Dwyer
patent: 4128592 (1978-12-01), Kaeding
"Selective Disproportionation of Alkylbenzenes Over Mordenite Molecular Sieve Catalyst", Journal of Catalysis 19, 394-397 (1970), Sigmund M. Csicsery.

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