A process for preparing a catalytic
cracking catalyst, which process comprises: a
molecular sieve is introduced into a gas-phase ultra-stabilization reactor, the
molecular sieve is moved without the conveying of carrier gas from a
molecular sieve inlet of the gas-phase ultra-stabilization reactor to a molecular
sieve outlet of the gas-phase ultra-stabilization reactor, and the molecular
sieve is contacted and reacted with a gaseous SiCl4 in the gas-phase ultra-stabilization reactor, the molecular
sieve resulting from the contacting and the reacting is optionally washed, then mixed with a matrix and water into
slurry, and shaped into particles.