Process for the preparation of propylene oxide

Details Process for the preparation of propylene oxide Process for the preparation of propylene oxide

C - Chemistry, Metallurgy

07

D

C07D 301/12 (2006.01)

Patent

CA 2414756

The invention relates to a method for the production of propylene oxide, whereby (i) propylene is reacted with hydrogen peroxide in the presence of methanol to form propylene oxide, resulting in a mixture (Gi), comprising propylene oxide, methanol, water and unreacted hydrogen peroxide, (ii) from mixture (Gi) a mixture (Gii), comprising methanol, water and hydrogen peroxide is separated off, yielding a mixture (Ga), comprising propylene oxide. Water is separated off from mixture (Gii) to give a mixture (Giii), comprising methanol and methyl formate.

L'invention concerne un procédé de production d'oxyde de propylène. Ce procédé consiste (i) à faire réagir le propène avec le peroxyde d'hydrogène en présence de méthanol pour former l'oxyde de propylène, avec obtention d'un mélange (Gi), constitué d'oxyde de propylène, de méthanol, d'eau et de peroxyde d'hydrogène n'ayant pas réagi ; (ii) à séparer du mélange (Gi) un mélange (Gii) constitué de méthanol, d'eau et de peroxyde d'hydrogène, avec obtention d'un mélange (Ga) constitué d'oxyde de propylène, et (iii) à séparer l'eau du mélange (Gii), avec obtention d'un mélange (Giii) constitué de méthanol et de formiate de méthyle.

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