process for the regeneration of a catalyst, regenerated catalyst, and continuous process for the preparation of propylene oxide.

摘要

The invention relates to the process for regenerating a catalyst comprising a titanium-containing zeolite as a catalytically active material comprising a stage comprising introducing a feed stream comprising propene, hydrogen peroxide or a source of hydrogen peroxide, and an organic solvent in a reactor containing a catalyst comprising the titanium containing zeolite, subjecting the feed stream in the reactor to epoxidation conditions in the presence of the catalyst, removing a product vapor comprising propylene oxide and the reactor organic solvent, interrupting When introducing the feed stream, wash the catalyst with a liquid aqueous system and calcinate the washed catalyst.