| 摘要 |
1502045 Preparation of ethyibenzene hydroperoxide HALCON INTERNATIONAL Inc 21 April 1976 [21 April 1975] 16164/76 Heading C2C A process for the preparation of ethylbenzene hydroperoxide by liquid phase molecular oxygen oxidation of ethylbenzene comprises introducing liquid ethylbenzene and molecular oxygen into a reaction zone and withdrawing a liquid stream containing the hydroperoxide from said zone, removing vapours containing non-condensible inert gases from said reaction zone, separating condensible components from said vapours and regulating the reaction temperature within said zone by controlled recycle of said non-condensible gases to said zone. In one preferred embodiment of the invention, the liquid ethylbenzene is introduced into the first of a plurality of reaction zones connected together in series and the liquid stream containing the hydroperoxide is withdrawn from the last of said zones, vapours containing non-condensible inert gases are removed from each of said zones, and the reaction temperature within at least one of said zones is regulated by controlled recycle of said non-condensible gases to said zones. The hydroperoxides obtained by the present process may be reacted with olefins in the presence of a catalyst to produce epoxides, particularly propylene oxide. |
