| 摘要 |
<p>Method for impregnating a Group VIII metal on a molecular sieve- binder extrudate wherein the binder comprises a low acidity refractory oxide binder material, which is essentially free of alumina, by: a) contacting the molecular sieve-binder extrudate with an aqueous solution of a corresponding Group VIII metal nitrate salt having a pH of below 8, wherein the molar ratio between the Group VIII metal cations in the solution and the number of sorption sites present in the extrudate is equal to or larger than 1; b) drying the molecular sieve-binder extrudate obtained from step a).</p> |
