Process for the preparation of titanium-containing molecular...

Details Process for the preparation of titanium-containing molecular... Process for the preparation of titanium-containing molecular...

C - Chemistry, Metallurgy

01

B

C01B 39/00 (2006.01) B01J 29/00 (2006.01) B01J 29/89 (2006.01) C01B 37/00 (2006.01) C07D 301/12 (2006.01)

Patent

CA 2219248

Titanium-containing molecular sieves are prepared by adding an aqueous solution of a template (structure-determining component) to a mixture of tetraalkyl orthosilicate and tetraalkyl orthotitanate, crystallizing the reaction mixture in an autoclave, followed by separation, and optional washing and calcining of the resultant solid. The titanium-containing molecular sieves can be used as catalysts, inter alia, in the epoxidation of olefins.

Des tamis moléculaires contenant du titane sont préparés en ajoutant une solution aqueuse d'une matrice (constituant déterminant la structure) dans un mélange d'orthosilicate de tétraalkyle et d'orthotitanate de tétraalkyle, en cristallisant le mélange réactionnel dans un autoclave, puis en séparant et, facultativement, en lavant et calcinant le solide obtenu. Les tamis moléculaires contenant du titane peuvent être utilisés comme catalyseurs, notamment dans l'époxydation des oléfines.

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