| 摘要 |
Porous composite particles are provided which comprise an aluminum oxide component, e.g., crystalline boehmite having a crystallite size of from abou t 20 to about 200 Angstroms and additive component residue, e.g., silicate, phosphate, of a crystal size growth inhibitor, intimately dispersed within t he aluminum oxide component. The aluminum oxide component of the composite particles are derived from a mixture of alumina trihydrate (e.g., gibbsite) and an alumina seed component, i.e., active alumina, which are both converte d to crystalline boehmite in the presence of the additive component. Also provided is a method for making the composite particles, agglomerate particl es derived therefrom, and a process for hydroprocessing petroleum feedstock usi ng the agglomerates.
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