Abstract: The physicochemical properties and catalytic performances of the integrated FCC catalyst produced by traditional methods (contains a certain proportion of different zeolites) and the physical blending catalysts (from mixing the based catalyst which contains only Y zeolite or modified ZSM-5 with a close ratio as in the former were comparatively studied. The results showed that, at similar compositions, the physicochemical properties and catalytic performances of blended catalysts are close to the integrated one. Therefore, FCC catalysts could be flexibly tailor-made for refineries by blending base catalysts. In addition, some issues about the formulation and attrition property of base catalysts which should be cared were suggested.

Key words: FCC catalyst, blending, catalytic performance, physicochemical property, evaluation