Process for synthesizing a molecular sieve having the faujasite structure and containing aluminum and gallium

摘要

A crystalline, gallioaluminosilicate molecular sieve having the faujasite structure is synthesized by mixing a substantially gallia-free aluminosilicate hydrogel with a galliosilicate solution substantially free of alumina to form a mixture having the following oxide mole ratios of components SiO2/(Al2O3+Ga2O3)=5 to 30 Na2O/(Al2O3+Ga2O3)=1 to 5 H2O/(Al2O3+Ga2O3)=50 to 300 and then crystallizing the resultant mixture, usually in 3 days or less, under relatively quiescent conditions.