2002 Volume 45 Issue 2 Pages 99-102
The transalkylation of trimethylbenzene with benzene was investigated over Ferrierite, ZSM-5, Mordenite, β-type and Y-type zeolite catalysts, and the transalkylation activities were compared. Liquid phase transalkylation was performed with a batch reactor under the conditions of 250°C, 3.0MPa, and molar benzene/trimethylbenzene ratio of 1.
The transalkylation proceeded over Mordenite, β-type and Y-type zeolites, and Y-type zeolite exhibited the highest catalytic activity of the three catalysts. USY-type zeolite, a dealuminated Y-type zeolite, had a higher activity than Y-type zeolite. This result may be due to the formation of mesopores through dealumination.
The effect of the acidity of the zeolites on the transalkylation was investigated using ion (Mg2+, Ca2+, Sr2+, Ba2+)-exchanged Y-type zeolite. The catalytic activity for the transalkylation decreased with lower acidity of the zeolite.
