PROCEDURE FOR OBTAINING PROPYLENE OXIDE USING SILVER CATALYSTS SUPPORTED ON ALKALINE-TERREO METAL COMPOUNDS AND CONTAINING WOLFRAMIO AND POTASSIUM PROMOTERS.

摘要

A process for the epoxidation of propylene comprising contacting a feed stream comprising propylene and oxygen with a supported silver catalyst comprising: (a) a support comprising an alkali metal compound selected from the group consisting of carbonates of alkaline earth metals, alkaline earth metal titanates, and mixtures thereof; (b) a catalytically effective amount of silver; (c) a promoter amount of a tungsten promoter; and (d) a promoter amount of a potassium promoter.