FCC CATALYSTS PREPARED BY IN-SITU CRYSTALLIZATION OF ZEOLITE

摘要

A fluid catalytic cracking catalyst is provided with a high porosity by in-situ crystallizing an aluminosilicate zeolite from a reactive microspherecomprising metakaolin and hydrous kaolin. Any calcination of the reactivemicrosphere before reaction with a zeolite-forming solution is done at lowtemperatures so as to ensure the hydrous kaolin is not converted to metakaolin.