ALUMINA TRIHYDRATE DERIVED HIGH PORE VOLUME HIGH SURFACE AREA ALUMINUM OXIDE COMPOSITES AND METHODS OF THEIR PREPARATION AND USE

摘要

(E.g., crystalline baleite having a brittle size of from about 20 to about 200 A), and additive component residues (e.g., silicates, phosphate) of a crystal size growth inhibitor intimately dispersed in the aluminum oxide component / RTI is provided. The aluminum oxide component of this composite particle is derived from a mixture of alumina trihydrate (e.g. gibbsite) and alumina crystal core component (i. E. Active alumina), both of which are converted to crystalline beemite in the presence of an additive component do. Also provided are methods of making composite particles, aggregate particles derived therefrom, and methods of hydrotreating petroleum feedstocks using the aggregates.