| abstract |
A process for producing propylene oxide comprising reacting propene with hydrogen peroxide in the presence of a catalyst to give a mixture (GI) comprising propylene oxide, unreacted propene, and oxygen; separating the propylene oxide from the mixture (GI) to give a mixture (GIl) comprising propene and oxygen; and adding hydrogen to the mixture (GIl) and reacting the oxygen comprised in the mixture (GIl) at least partially by reaction with hydrogen, in the presence of a catalyst comprising elemental and / or oxidized copper on a support, wherein copper is present on the support in an amount of 30 to 80% by weight based on the total catalyst and calculated as CuO. |