Process for the rapid synthesis of an AFX-structural-type zeolite with a source of faujasite

摘要

The present invention relates to a process for the rapid synthesis of a zeolite with structure type AFX comprising at least: i) the mixture in aqueous medium, of a zeolite with structure type FAU having an SiO2 (FAU) / Al2O3 (FAU) molar ratio between 2.00 and 100, of a nitrogenous organic compound R, of at least one source of at least one alkali and / or alkaline earth metal M of valence n, with the following molar composition: (SiO2 (FAU )) / (Al2O3 (FAU)) between 2.00 and 100, H2O / (SiO2 (FAU)) between 1 and 100, R / (SiO2 (FAU)) between 0.01 and 0.6, M2 / nO / (SiO2 (FAU)) between 0.005 to 0.45, in which SiO2 (FAU) denotes the amount of SiO2 supplied by the FAU zeolite, and Al2O3 (FAU) denotes the amount of Al2O3 supplied by the FAU zeolite, until a homogeneous precursor gel is obtained; ii) the hydrothermal treatment of said precursor gel obtained at the end of step i) under autogenous pressure at a temperature between 120 ° C and 250 ° C, for 4 to 12 hours. Figure 1 to publish