BILLES D'ALUMINE AYANT UNE GRANDE RESISTANCE MECANIQUE AUX CHOCS, LEUR PROCEDE DE FABRICATION ET LEURS UTILISATIONS

摘要

Porous spheroidal alumina particulate solids that comprise an alumina filler in an amount of about 0.1% to about 25% by weight of Al2O3 and have a mechanical resistance to shocks measured by spheres impacting against a target at the speed of 20 m/s such that the fines fragmentation percentage, of a size of less than 50% of the average size of the initial spheres, is less than 5% by weight. Preparation of these spheres by coagulation in drops from an oil-in-water-type emulsion. Application of these spheres as a catalyst substrate or as an adsorbent.