Preparation of mfi-type crystalline zeolitic aluminosilicate

Details Preparation of mfi-type crystalline zeolitic aluminosilicate Preparation of mfi-type crystalline zeolitic aluminosilicate

C - Chemistry, Metallurgy

01

B

C01B 39/38 (2006.01)

Patent

CA 2477713

A process for synthesizing a crystalline aluminosilicate zeolite having an MFI structure comprising crystallizing the zeolite from an alkaline aqueous reaction mixture that comprises SiO2 and AI2O3 or their hydrated derivatives, and an amorphous aluminosilicate nucleating gel with an SiO2/AI2O3 ratio of from 10 to less than 20. The reaction mixture does not contain an organic template.

L'invention concerne un procédé permettant de synthétiser une zéolite aluminosilicate cristalline présentant une structure MFI. Ce procédé consiste à cristalliser la zéolite à partir d'un mélange de réaction aqueux alcalin comprenant du SiO¿2? et du AI¿2?O¿3? ou leurs dérivés hydratés, et d'un gel amorphe de nucléation de l'aluminosilicate présentant un rapport SiO¿2?/AI¿2?O¿3? compris entre 10 et 20, au maximum. Le mélange de réaction ne contient aucune matrice organique.

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