| 摘要 |
The present invention is directed to the improvement of catalytic hydrocarbon conversion processes by employing novel catalysts therein of increased activity, selectivity, and/or stability in comparison to prior art catalysts. These catalysts comprise in intimate heterogeneous admixture a crystalline aluminosilicate zeolite and a dispersion of silica-alumina in a gamma alumina matrix. When hydrogenation reactions are desired, one or more hydrogenation components, such as nickel and tungsten, are incorporated into the catalyst. The catalyst of the invention is particularly suitable for use in hydrocracking gas oil feedstocks and the like so as to produce products boiling in the midbarrel range of 300` to 700` F. (149` to 371` C.), exhibiting substantial activity, selectivity, and stability, especially when the zeolite in the catalyst is LZ-10. |
