Alkylation/transalkylation process

Details Alkylation/transalkylation process Alkylation/transalkylation process

1987-09-11

1988-09-27

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Plural serial diverse syntheses

To produce aromatic

585466, 585474, 585475, C07C 100, C07C 268, C07C 522

Patent

active

047743778

ABSTRACT:
An alkylation-transalkylation process for the production of a monoalkylated aromatic compound is disclosed which maximizes the production of desirable monoalkylaromatic compounds, while limiting transalkylation catalyst deactivation. The process entails the combination of an alkylation reaction zone, a first separation zone, a second separation zone, and a transalkylation reaction zone wherein the alkylation catalyst and transalkylation catalyst are dissimilar and where the alkylation catalyst is comprised of phosphoric acid material and the transalkylation catalyst is comprised of a crystalline aluminosilicate material. The transalkylation catalyst deactivation is reduced by transalkylating only dialkylated aromatic compounds.

REFERENCES:
patent: 3551510 (1970-12-01), Pollitzer et al.
patent: 3562345 (1971-02-01), Mitsche
patent: 3751504 (1973-08-01), Keown et al.
patent: 4008290 (1977-02-01), Ward
patent: 4459426 (1984-07-01), Inwood et al.

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