Patent ID: 7863468

Claim:
A process for producing propylene oxide, comprising: (I) reacting propene with hydrogen peroxide in the presence of a titanium containing zeolite catalyst and in the presence of methanol a solvent to give a mixture (GI) comprising propylene oxide, unreacted propene, and oxygen; (II) separating propylene oxide from mixture (GI) to give a mixture (GII) comprising propene and oxygen; (III) reducing the oxygen comprised in mixture (GII) at least partially by reaction with hydrogen in the presence of a catalyst comprising Sn and at least one noble metal to give a mixture (GIII); wherein the catalyst further comprises a metal oxide support, said metal oxide support being alumina; wherein in (III), the hydrogen is added in an amount so that the molar ratio of hydrogen to oxygen is in the range of from 0.1:1 to 4.5:1.