Study on Catalyst Life for Synthesis of Cumene by Liquid-phase Method II Mechanism of Deactivation

Studied the inactivation mechanism of two catalysts, FX-01 catalyst and its modified catalyst, via acceleration of deactivation process by decreasing the ratio of the reagents for synthesis of cumene, bezene and propylene. The product and carbon deposites were analyzed by GC-MS. The results show that the carbon deposites on the deactivated catalyst are mainly composed of such macromolecular substance as polycyclic aromatic hydrocarbon and propylene oligomer products. The life-span of the modified catalyst is four times longer than that of FX-01 zeolite catalyst, meanwhile substances of the carbon deposites on the deactivated catalyst are greatly reduced.