Zeolite compositions and preparation and use thereof

Details Zeolite compositions and preparation and use thereof Zeolite compositions and preparation and use thereof

C - Chemistry, Metallurgy

01

B

C01B 37/00 (2006.01) C01B 39/08 (2006.01)

Patent

CA 2588589

This invention relates to novel compositions of zeolites or microporous metallosilicatescharacterised by a continuous spatial distribution of the metal and silicon in the crystals and characterised by a crystal surface enriched in silicon relative to the internal part of the same crystals. This invention also relates to a synthesis method of producing these metallosilicates with spatial distribution of the constituting elements. These novel zeolitic compositions can be used in various hydrocarbon conversion reactions. The crystalline metallosilicates can be selected from the group consisting of aluminosilicates, gallosilicates, ferrosilicates, titanosilicates and borosilicates.

L'invention concerne de nouvelles compositions à base de zéolites ou de métallosilicates microporeux, caractérisées par une répartition spatiale continue de métal et de silicium dans les cristaux et par une surface de cristal enrichie en silicium par rapport à la partie intérieure de ces cristaux. L'invention concerne aussi un procédé de synthèse destiné à la fabrication de ces métallosilicates, avec répartition spatiale des éléments constitutifs. Ces nouvelles compositions à base de zéolites peuvent s'utiliser dans de différentes réactions de conversion d'hydrocarbures. Les métallosilicates cristallins peuvent être sélectionnés dans le groupe constitué d'aluminosilicates, de gallosilicates, de ferrosilicates, de titanosilicates et de borosilicates.

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