Silver catalyst

US5407888A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Herzog · Oberkochen, DE
• Stefan Boeck · Ludwigshafen, DE
• Wolf D. Mross · Bischofswerda, DE
• Juergen Plueckhan · Bischofswerda, DE
• Karl-Heinz Boehning · Darmstadt, DE
• Ewald Gallei · Viernheim, DE

Key dates

• Filing date: May 10, 1993
• Grant date: Apr 18, 1995
• Expiry date: May 10, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D301/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A silver catalyst containing one or more alkali metals and also tungsten as promotors for the direct oxidation of ethylene with oxygen to form ethylene oxide, on a porous support substantially consisting of .alpha.-aluminum oxide and having a specific surface area (BET) of from 0.3 to 3 m.sup.2 /g, which contains tungsten in a concentration of from 60 to 330 ppmwt, based on the total catalyst, per m.sup.2 of surface area for each gram of supporting material.