Abstract: A new catalytic cracking (FCC) catalyst rich in interconnected meso-macro pores has been developed by SINOPEC Research Institute of Petroleum Processing Co., Ltd., basing on the new developed alumina matrix and catalyst preparation technology, which solves the problem of the mutual constraint between abundant meso-macro pores and excellent strength of catalyst. The results of physical and chemical properties show that compared with the catalyst using conventional alumina matrix, the new catalyst has larger pore volume and better diffusion performance, the pore volume increased from 0.37cm³/g to 0.45 cm³/g, the 5—100 nm pore proportation increased from 16% to 52%, and has excellent pore inter-connectivity. The evaluation results of catalytic cracking reaction using heavy feedstock show that the new catalyst could achieve higher light oil product yields, lower heavy oil and coke yields than the comparative catalyst, providing technical support for improving the efficient conversion of inferior feedstocks.

Key words: catalytic cracking, catalyst, interconnected meso-marco pores, alumina