Process for the preparation of an epoxide

Details Process for the preparation of an epoxide Process for the preparation of an epoxide

C - Chemistry, Metallurgy

07

D

C07D 301/12 (2006.01) B01J 29/89 (2006.01) B01J 29/90 (2006.01) B01J 38/62 (2006.01)

Patent

CA 2421866

The invention relates to a method for producing an epoxide in the presence of a zeolite catalyst, whereby (i) an alkene is reacted with a hydroperoxide in the presence of the catalyst in order to obtain the epoxide, and at least one alkali metal salt is supplied to the reaction in at least one educt flow. The inventive method is characterised in that (ii) the supply of the at least one alkali metal salt is cut off during the reaction, and the supply of hydroperoxide and alkene is continued.

L'invention concerne un procédé de préparation d'un époxyde en présence d'un catalyseur à zéolithe. Ce procédé consiste (i) à faire réagir un alcène avec un hydroperoxide en présence du catalyseur pour former l'époxyde, au moins un sel de métaux alcalins étant ajouté à la réaction dans au moins un courant d'éduit, ce procédé se caractérisant en ce que (ii), au cours de la réaction, l'addition du ou des sels de métaux alcalins est interrompue et l'introduction d'hydroperoxide et d'alcène est prolongée.

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