Process for the production of cumene

摘要

Cumene is prepared by alkylation of benzene with propylene in the presence of a solid phosphoric acid catalyst in a continuous process by delivering liquid benzene and liquid propylene in a molar ratio lower than 6:1, to a liquid reaction medium consisting essentially of benzene and cumene and containing the catalyst, while maintaining the temperature and composition of said medium substantially uniform in each point, operating at 170 DEG -280 DEG C. and in the liquid phase, and with a contact time higher than about 0.4 hours, expressed as the ratio between volume of catalyst and hourly volume of reagents fed in.