Synthetic, crystalline aluminosilicate, method for its preparation as well as use

摘要

Synthetic crystalline aluminosilicate is prepared by an inorganic process from a reaction mixture, which contains, in an aqueous alkaline medium SiO2 and Al2O3 or their hydrated derivatives or alkali silicates and aluminates, mineralizers and optionally seeding crystals, the reaction mixture containing: SiO2/Al2O3 in molar ratio of 15-40, OH-/SiO2 in molar ratio 0.1-0.2, and H2O/SiO2 in molar ratio 20-60. The aluminosilicate produced by the process has a chemical composition expressed in molar ratios as: 0-3 M2O:Al2O3:15-40 SiO2:0-40 H2O, where M represents an alkali cation. The aluminosilicate is useful in the preparation of catalysts and adsorbents.