Synthesis of zeolite itq-16 in an alkaline medium

C - Chemistry – Metallurgy – 01 – B

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C01B 39/48 (2006.01) B01J 29/04 (2006.01) C01B 37/00 (2006.01) C01B 39/02 (2006.01) C01B 39/08 (2006.01) C10G 11/05 (2006.01) C10G 47/16 (2006.01)

Patent

CA 2437132

The invention relates to a method for synthesising 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 characterised 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.

La présente invention concerne un procédé de synthèse, en milieu OH?-¿ et en l'absence de fluorures, d'une famille de matériaux zéolitiques compris dans la dénomination ITQ-16, et ses applications catalytiques. Cette famille de matériaux, la zéolite ITQ-16, se caractérise en ce qu'elle comprend des relations différentes des différents polymorphes A, B et C décrites comme de possible intercroissances dans la zéolite Bêta, et en ce qu'elle présente, par conséquent, des schémas de diffraction de rayons X différents de celui décrit pour la zéolite Bêta. La zéolite ITQ-16, sous forme calcinée, est représentée par la formule générale empirique x(MXO¿2?) : tTO¿2? : gGeO¿2? : (1-g)SiO¿2?, dans laquelle T représente un ou plusieurs éléments à l'état d'oxydation +4 différents de Ge et de Si, X représente un ou plusieurs éléments à l'état d'oxydation +3 et M peut représenter H?+¿ ou un ou plusieurs cations inorganiques à charge +n.

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