| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing propylene oxide in high yield and selectivity from an organic hydroperoxide and propylene in the presence of a solid catalyst while attaining the long-term stable operation of the reactor. <P>SOLUTION: The method for producing propylene oxide comprises the steps described below: The epoxidation step, which comprises carrying out a reaction between the organic hydroperoxide and an excess amount of propylene in a liquid phase in the presence of the solid catalyst to obtain the objective propylene oxide and an alcohol. The propylene recovery step, which comprises isolating and recovering unreacted propylene contained in the reaction liquid in the epoxidation step and recycling the recovered propylene to the epoxidation step as a feedstock for the epoxidation step. In this method, the total concentration of aldehydes in the propylene fed to the epoxidation step is ≤100 wt.ppm. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
