| 摘要 |
<p>Catalysts for feeds with high Conradson C and metals contents, comprises (a) 8-25 wt.% of an HY or ultra stable HY zeolite with a SiO2/Al2O3 molar ratio of at least 5 and a cell dimension of 24.3-24.7 Angstroms, (b) 20-70 wt.% kaolin with a crystallite size of 0.5-2 microns, (c) 35-70 wt.% of an acidic SiO2-Al2O3 cogel matrix contg. at least 13 wt.% Al2O3, (d) 0.1-3 wt.% rare earths comprising La and Ce in a ratio of 1-6:1, and</p> |
