| 摘要 |
A hydrocarbon conversion catalyst comprises silica and a stabilized Y zeolite having a chemical SiO2/Al2O3 molar ratio of from 4.5/1 to 6/1, the essential x-ray powder diffraction pattern of zeolite Y, a BET surface area of at least 350 m<2>/g and an adsorptive capacity for water vapour at 25 DEG C and a water vapour pressure of 320 Pa (2.4 Torr) of from 6 to 12 wt.%. The catalyst is useful for hydrocarbon conversion, especially fluid catalytic cracking. |
