PROCESS TO PREPARE A CRYSTALLINE ZEOLITE, SO PREPARED ZEOLITE, CATALYST CONTAINING THE SAME AND APPLICATION OF THIS CATALYST

摘要

A method of preparing crystalline zeolite materials having a constraint index between 1 and 12 and a SiO2/Al2O3 mole ratio greater than 12 which comprises crystallizing the substantially pure zeolite material from a mixture of a source of silica, and optionally alumina, in the presence of a trialkylmethylammonium cation, and zeolites so prepared.