Patent ID: 6093866
Filing Date: 2000-07-25
Classification: B01J,C07C,Y02P

Abstract:
An alkylation catalyst comprising from 50 to 70 wt %, based on the weight of the catalyst, of a hydrogen type ZSM-5/ZSM-11 co-crystalline zeolite containing a rare earth element, the balance being a porous inorganic oxide matrix material, wherein the zeolite has a weight ratio of ZSM-5 crystalline portion to ZSM-11 crystalline portion within the range of 0.25 to 2.5, and in an originally synthesized anhydrous state a chemical composition formula in mole ratios of oxides as follows:XNa.sub.2 O.YRE.sub.2 O.sub.3.Al.sub.2 O.sub.3.ZSiO.sub.2wherein X is within the range of 0.1 to 1.0, Y is within the range of 0.1 to 1.0 and Z is within the range of 20 to 100, the zeolite having an X-ray diffraction pattern comprising X-ray diffraction lines and respective relative intensities as shown in the following table: d(.ANG.) 100 l/l.sub.o  11.2 .+-. 0.2 M 10.1 .+-. 0.2 M 6.05 .+-. 0.14 W 4.40 .+-. 0.08 W 3.86 .+-. 0.07 VS 3.72 .+-. 0.07 S 3.65 .+-. 0.07 W-M 2.01 .+-. 0.02 W  VS = very strong (100-60); S = (60-40); M = medium (40-20); W = weak (<20).