A Y-zeolite-containing composite material made from materials comprising
kaolin by in-situ crystallization, said composite material comprises
nest-like structure. Content of Y-zeolite is in the range of 30 85% by
weight of said composite material. The nest-like structure is essentially
comprised of rodlike crystal, further comprises flaky crystal or blocky
crystal. Y-zeolite in the composite material may be HY, REY, or REHY.
Said composite material is suitable to be used as catalysts for catalytic
cracking of heavy oil or resid. The invention further relates to a
process for preparing the composite material.