molecular sieve composition of the mcm-22 family, its preparation method, and use for hydrocarbon conversions

摘要

This disclosure relates to a crystalline MCM-22 family molecular sieve having a platelet aggregates morphology wherein greater than 50 wt % of the molecular sieve having a crystal diameter greater than 1 m as measured by the SEM. The crystalline MCM-22 family molecular sieve of this disclosure, wherein the platelet aggregates morphology is rosette habit morphology, or multiple layer plate's morphology.