METHOD FOR CATALYTIC EPOXIDATION OF PROPENE Russian patent published in 2007 - IPC C07D301/12 

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to a method for catalytic epoxidation of propene with hydrogen peroxide in the presence of titanium-containing zeolite as a catalyst in multiphase reaction mixture comprising hydrogen peroxide-rich liquid aqueous phase containing methanol and dissolved propene and propene-rich liquid organic phase. Hydrogen peroxide is added as aqueous solution containing from 30 to 70 wt.-% of hydrogen peroxide. The reaction temperature in carrying out of the process is from 30°C to 80°C, pressure - from 5 to 50 bars, and the ratio value between propene consumption and the total consumption is in the range from 0.2 to 1. The process is carried out in tube reactor with immobile catalytic layer and fitted by a cooling agent (jacket). Invention provides enhancing degree in conversion of hydrogen peroxide and selectivity with respect to propene oxide.

EFFECT: improved method of epoxidation.

12 cl, 1 tbl, 4 ex