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Direct synthesis of cu-cha by means of combining a cu complex and tetraethylammonium and applications in catalysis

Other TitlesSíntesis directa de cu-cha mediante la combinación de un complejo de cu y tetraetilamonio, y aplicaciones en catálisis
AuthorsCorma, Avelino ; Moliner Marín, Manuel; Martín, Nuria
Issue Date10-May-2018
CitationUS2018127282 A1
AbstractThe present invention relates to a process for the direct synthesis of a material with a CHA zeolite structure in the silicoaluminate form thereof containing copper atoms, which comprises at least the following steps: (i) Preparation of a mixture which contains at least one water source, one copper source, one polyamine, one source of Y tetravalent element, one source of X trivalent element, the tetraethylammonium cation as the only OSDA and one source of alkaline or alkaline earth (A) cations, and wherein the synthesis mixture has the following molar composition: YO 2 : a X 2 O 3 : b OSDA : c A : d H 2 O : e Cu : f polyamine (ii) Crystallization of the mixture obtained in (i) in a reactor; (iii) Recovery of the crystalline material obtained in (ii).
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