Method for preparing cumene.

摘要

Cumene is prepared by alkylation of benzene with propylene, or by transalkylation of diisopropylbenzenes in the presence of benzene, on a silica and alumina gel catalyst which is amorphous to X-rays and has an SiO2/Al2O3 ratio of between 50/1 and 300/1, a surface area of between 500 and 1000 m<2>/g, an overall pore volume of between 0.3 nad 0.6 ml/g and mean pore diameter of the order of 10 ANGSTROM , and which is free or substantially free of pores having a diameter exceeding 30 ANGSTROM .