Synthesis of zeolite ITQ-16 in an alkaline medium

Chemistry of inorganic compounds – Zeolite – Organic compound used to form zeolite

Reexamination Certificate

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C423S706000, C423S708000, C423S718000, C423SDIG027

Reexamination Certificate

active

07056489

ABSTRACT:
The invention relates to a method for synthesizing a family of zeolite materials, grouped together under the name ITQ-16, in an OH−medium and in the absence of fluorides and to the catalytic applications thereof. The zeolite ITQ-16 family of materials is characterized by having different proportions of distinct polymorphs A, B and C described as possible intergrowths in the Beta zeolite and, therefore, the X-ray diffraction patterns of said family are different from that described for the Beta zeolite. In its calcinated form, zeolite ITQ-16 has the following empirical formula: x(MXO2):tTO2:gGeO2:(1−g)SiO2, wherein T is one or more elements having +4 oxidation status and different from Ge and Si; X is one or more elements having +3 oxidation status; and M can be H+or one or more inorganic cations with a +n charge.

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Joaquin Perez-Pariente et al, Crystallization Mechanism of Zeolite Beta From (TEA)2O, Na2O and K2O Containing Aluminosilicate Gels, Applied Catalysis, 31 (1987) 35-64.
Corma, A. et al.; ITQ-16; a new zeolite family of the beta group with different proportions of polymorphs A,B and C; Chem. Commun., 2001, vol. 18, pp. 1720-1721; ISSN 1359-7345; Sep. 14, 2001.

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