C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 15/073 (2006.01) C07C 2/66 (2006.01) C07C 6/12 (2006.01)
Patent
CA 2172207
A process for transalkylating polyalkylbenzenes such as diethylbenzenes produced during the alkylation of an aromatic hydrocarbon with an olefin using a catalyst with improved transalkylation activity is disclosed. The process comprises supplying a feedstock containing benzene and recycled polyalkylbenzenes into a reaction zone with an alkylating agent in a molar ratio of benzene to alkylating agent of from about 2:1 to about 20:1 and into contact with an aluminosilicate alkylation catalyst having an average crystal size of less than about 0.50 µm and wherein about 90% of the crystals have a particle size of less than 0.70 µm. The catalyst is characterized by an Si/Al atomic ratio in the range from between 50 and 150 and a maximum pore size in the range from about 1000 to 1800 A. The catalyst has a sodium content of less than about 50 ppm and the reaction is carried out under conversion conditions including a temperature of from about 250°C. to about 500°C. and a pressure of from about 200 psi to about 500 psi.
Butler James Roy
Kuchenmeister Mark Edward
Fina Technology Inc.
Gowling Lafleur Henderson Llp
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