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 2588596

This invention relates to novel compositions of zeolites or microporous metallosilicates characterised 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 porte sur de nouvelles compositions de zéolites ou de métallosilicates microporeux se caractérisant par une répartition spatiale continue du métal et de silicium dans les cristaux et caractérisée par une surface cristalline enrichie en silicium par rapport à la partie interne des mêmes cristaux. Cette invention concerne aussi un procédé de synthèse permettant de fabriquer ces métallosilicates avec une répartition spatiale des éléments constitutifs. Ces nouvelles compositions de zéolite peuvent être utilisées dans plusieurs réactions de conversion d'hydrocarbure. Ces métallosilicates cristallins peuvent être choisis dans le groupe aluminosilicates, gallosilicates, ferrosilicates, titanosilicates et borosilicates.

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