| 摘要 |
<p>The catalyst comprises an admixture of composite particles, one present in majorconcentration constituted essentially of one or more Group VIII noble metals, preferably platinum, composited with a support comprised of a crystalline alumino silicate component distributed in an active cracking catalyst matrix, suitably one constituted of silica-alumina. A minor component particle, having a sulfur fixation and transfer function, is comprised of one or more Group II-A metals, preferably magnesium, composited with a support, suitably silica-alumina or silica-alumina, which may also contain a crystalline aluminosilicate zeolite component dispersed within the silica-magnesia or silica-alumina support matrix.</p> |
