METHOD OF PRODUCING OLEFIN OXIDE Russian patent published in 2013 - IPC B01J23/58 B01J23/50 B01J23/36 B01J35/10 C07D301/04 

FIELD: process engineering.

SUBSTANCE: invention relates to olefin epoxidation. method of epoxidising of olefin to olefin oxide comprises the following operations: bringing the load including, at least, oxygen and olefin, in reactor with catalyst including carrier with bimodal pore distribution in sizes, first types of pores with mean diameter of 0.01-5 mcm and second type of pores with mean diameter of pores of 5-50 mcm, catalytically active amount of silver or silver-bearing compound, promoting amount of rhenium or rhenium-bearing compound, and promoting amount of one or more alkaline metals or alkaline metal-bearing compound. Note here that said reactor has, at least, its outlet, while said olefin oxide resulted from aforesaid contact features concentration at reactor outlet of 2.2 vol. % of cesium, lithium and tungsten. It may comprise bringing the load including, at least, oxygen and olefin, in reactor with catalyst including carrier with total volume of pores of 0.41 cm³/g and bimodal pore distribution in sizes, first types of pores making 25% of total volume of pores with mean diameter of 0.7 mcm and second type of pores making 75% of total amount of pores with mean diameter of pores of 15.8 mcm, catalytically active amount of silver or silver-bearing compound, promoting amount of rhenium or rhenium-bearing compound, and promoting amount of one or more alkaline metals or alkaline metal-bearing compound. Note here that said reactor has, at least, its outlet, while said olefin oxide resulted from aforesaid contact features concentration at reactor outlet over about of 2.2 vol. % at 236°C.

EFFECT: higher selectivity and efficiency.

34 cl, 2 tbl, 1 dwg, 2 ex