Aromatic alkylation with a catalyst containing an improved...

Details Aromatic alkylation with a catalyst containing an improved... Aromatic alkylation with a catalyst containing an improved...

B - Operations, Transporting

01

J

B01J 35/10 (2006.01) B01J 29/06 (2006.01) B01J 29/70 (2006.01) B01J 29/74 (2006.01) B01J 37/08 (2006.01) C07C 2/66 (2006.01) C07C 6/12 (2006.01) C07C 15/02 (2006.01) C07C 15/24 (2006.01) C07C 15/27 (2006.01) C07C 37/14 (2006.01) C07C 39/06 (2006.01) C07C 41/30 (2006.01) C07C 43/205 (2006.01)

Patent

CA 2230772

There is disclosed a new form of a zeolite beta catalyst which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The new, surface-modified zeolite beta is characterized by having surface aluminum 2p binding energies as measured by X-ray photoelectron spectroscopy, of a least 74.8 electron volts. This surface-modified zeolite beta is prepared by treating a templated zeolite beta with an acid at a pH between 0 and 2 and a temperature up to 125 °C for a time sufficient to modify the chemical environment of the surface aluminum atom without bringing about dealumination of the zeolite beta.

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