| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum-reinserted type Y zeolite catalyst composition having specified properties and exerting excellent effects when used in catalytic cracking of heavy hydrocarbons, especially residual oil. SOLUTION: The catalyst composition for catalytic cracking of hydrocarbons comprises an aluminum-reinserted type Y zeolite having properties of (a)-(g) and an inorganic oxide matrix: (a) a unit lattice constant, UD, of 24.25-24.60Å, (b) a degree of crystallinity of≥95%, (c) a specific surface area of≥500 m<SP>2</SP>/g, (d) a total volume, PVt, of the group of micro pores of a 600Åor smaller diameter of 0.45-0.70 ml/g, (e) a total volume, PVm, of the group of micro pores of a 100-600Ådiameter of 0.10-0.40 ml/g, (f) a total volume, PVs, of the group of micro pores of a 35-50Ådiameter of 0.03-0.15 ml/g and (g) a ratio of tetra-coordinated aluminum atoms to all the aluminum atoms in the zeolite of≥60 atom%. COPYRIGHT: (C)2006,JPO&NCIPI
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