Liquid-phase oxidation of propylene to propylene oxide method

The present invention relates to a liquid-phase oxidation of propylene to propylene oxide method, solve the main problem with the prior art does not disclose a specific crystal plane exposed to highly active α-MoO3 liquid crystals can be used for oxidation of propylene to propylene oxide. In the present invention, by using an organic peroxide and propylene as raw materials in the presence of a solvent, the molar ratio of the organic peroxide with propylene is 5 to 10, the reaction temperature is 60 ~ 110 ℃, reaction pressure 0.8 ~ 3MPa under conditions the reaction feedstock is contacted with the catalyst to form propylene oxide; wherein the catalyst is orthorhombic, the crystal plane exposed highly active α-MoO3 crystals, a highly active crystal faces (100) and (010) crystal plane; the amount of catalyst is added in a molar ratio Mo / organic peroxide aspect 1/100 ~ 5/100 is preferably solves this problem, it can be used for industrial production of liquid-phase oxidation of propylene in the propylene oxide.