Alumina trihydrate derived high pore volume, high surface area aluminum oxide composites and methods of their preparation and use

摘要

Described porous composite particles, which contain aluminum oxide component and at least one additive component residue crystal size growth inhibitor, wherein said composite particles have: a) specific surface area of at least 80 m2 / g, b) average pore diameter from 60 to 1000 angstroms; c) a total pore volume from 0.2 to 2.5 cm3 / g, d) average particle diameter of 1 to 15 microns, and in those composite particles: (i) alumina component comprises at least 70% by weight. crystals, (ii) the remainder of the additive component is derived from at least one ionic compound and is present in the composite particles in an amount of 0.5 to 10 wt%. based on the total weight of aluminum oxide component and the rest of the food ingredients. It also described a method for producing these particles and how hydro process petroleum feedstock based on these particles.