Alkylation of organic aromatic compounds

Details Alkylation of organic aromatic compounds Alkylation of organic aromatic compounds

C - Chemistry, Metallurgy

07

C

260/684.1, 260/6

C07C 2/64 (2006.01) B01D 3/00 (2006.01) C07C 2/66 (2006.01) C07C 15/067 (2006.01) C07C 37/14 (2006.01) C07C 39/06 (2006.01)

Patent

CA 1311500

ALKYLATION OF ORGANIC AROMATIC COMPOUNDS ABSTRACT OF THE DISCLOSURE Aromatic compounds are alkylated in a catalytic distillation, wherein the catalyst structure also serves as a distillation component by contacting the aromatic compound with a C2 to C10 olefin in the catalyst bed under 0.25 to 50 atmospheres of pressure and at temperatures in the range of 80°C to 500°C, using as the catalyst a mole sieve characterized as acidic or an acidic cation exchange resin, For example, ethyl benzene is produced by feeding ethylene to about the mid point of the catalyst bed while benzene is conveniently added through the reflux in molar excess to that required to react with ethylene, thereby reacting substantially all of the ethylene and recovering benzene as the principal overhead and ethyl benzene in the bottoms.

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