Method for the production of a titanium-containing zeolite

C - Chemistry – Metallurgy – 01 – B

Patent

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C01B 37/02 (2006.01) B01J 29/89 (2006.01) C01B 37/00 (2006.01) C07D 301/12 (2006.01)

Patent

CA 2399192

The present invention concerns a method for the production of a titanium- containing zeolite whereby a synthesis gel is formed by combining and hydrolysing a hydrolysable silicon compound, a hydrolysable titanium compound and a basic quaternary ammonium compound in an aqueous medium, in quantities such that relative to the starting compounds the molar ratio of Si/Ti is greater than or equal to 30 and that of N/Si is 0.12 to less than 0.20, and the synthesis gel is then crystallised at a temperature of 150 °C to 220 °C for a period of less than 3 days, and a titanium- containing zeolite obtainable by this method.

L'invention concerne un procédé servant à produire une zéolithe contenant du titane, ce qui consiste à préparer un gel de synthèse par combinaison et hydrolyse d'un composé de silicium hydrolysable, d'un composé de titane hydrolysable et d'un composé d'ammonium quaternaire basique dans un milieu aqueux, en quantités telles que, par rapport aux composés de départ, le rapport molaire entre Si et Ti est supérieur ou égal à 30 et le rapport molaire entre N et Si est situé dans une plage de 0,12 à un chiffre inférieur à 0,20, puis à cristalliser ce gel de synthèse à une température de 150 DEG C à 220 DEG C pendant une durée inférieure à trois jours. Elle concerne également une zéolithe contenant titane pouvant être obtenue au moyen de ce procédé.

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