DIRECT SYNTHESIS Cu-CHA by combining a Cu AND tetraethylammonium, AND APPLICATIONS IN CATALYSIS

direct synthesis of Cu-CHA by combining a Cu and tetraethylammonium, and applications in catalysis. # The present invention relates to a process for the direct synthesis of a material with zeolitic structure CHA in its aluminosilicate form containing copper atoms which may comprise at least the following steps: # (i) Preparing a mixture containing at least a water source, a copper source, a polyamine, a source of tetravalent element Y, a source of trivalent element X, the tetraethylammonium cation as the sole ADEO and a source of alkali or alkaline earth cations (a), and wherein the synthesis mixture has the following molar composition: #Yo {sub, 2}: X {sub, 2} O {sub 3}: b ADEO: c: d H {sub, 2} O: and Cu:.. f Polyamine # (ii) Crystallisation of the mixture obtained in (i) in a reactor # (iii) recovering the crystalline material obtained in (ii).