PROCESS FOR THE SYNTHESIS OF ZEOLITES HAVING A GOSSOSILICATE FRAME BELONGING TO THE STRUCTURAL FAMILY OF FAUJASITE, PRODUCTS OBTAINED AND THEIR APPLICATION IN ADSORPTION AND CATALYSIS

摘要

A gallosilicate gel containing an ST structuring agent and having a composition suitable for crystallizing into a zeolite of the structural family of faujasite is prepared, and then said gel is crystallized to form a zeolite precursor consisting of said zeolite containing the structuring agent ST in its cavities and channels and the zeolite is produced by calcination of said precursor. The structuring agent ST consists of at least one compound selected from carbon rings and macrocycles. whose ring contains at least 6 atoms and contains heteroatoms chosen from oxygen, nitrogen and silicon. The zeolites obtained have a Si / Ga ratio of greater than 1 and may exceed 3 and exhibit a cubic symmetry. These zeolites can be used, directly or after cation exchange, as adsorbents or as catalyst components. / P