Preformed aluminosilicate beads were prepared by ion exchange of aluminosilicate species into ion exchange resins followed by combustion of the organic resin. The resultant amorphous beads were zeolitized thereafter by aging in TPAOH solutions and subsequent hydrothermal treatment. The zeolitization process was realized by rearrangement of the fine particles building Lip the amorphous aluminosilicate because framework into larger ZSM-5 crystals by complex dissolution-crystallization processes. The crystallinity the products was dependent on the aging procedure and the composition of the mixture during the hydrothermal treatment. The shape and the pore structure of the initial beads were generally preserved during the ZSM-5 formation.