Study on Catalyst Life for Synthesis of Cumene by Liquid-phase Method (I) Preparation and Property of Catalyst Modified

Focused on the life-span of FX-01 catalyst, which would be shorten when used in the synthesis of cumene with refinery propylene as raw material. Developed a new composite Beta-zeolite catalyst through the modification of FX-01 catalyst, which could be utilized for cumene synthesis by the liquid-state alkylation in a fixed-bed reactor. Introduced a preparative method of the new composite zeolite catalyst and the method of modification. Studied the activity and life-span changes before and after the modification with the deactivity-accelerated process at liquid state. The results show that the modified Beta-zeolite catalyst can sustain longer time than the previous one when experiencing the same process. The addition of proper hole-expanding agent to the catalyst achieve the same effect.