Process for activating or reactivating ethylene oxide silver substrate catalysts

US4376718A · kind A · utility

Assignee

• Chemische Werke Huels, A.G. · DE

Inventors

• Erwin Vangermain · Marl, DE
• Claus-Dieter Mengler · Marl, DE

Key dates

• Filing date: Mar 31, 1980
• Grant date: Mar 15, 1983
• Expiry date: Mar 31, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/584
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Process for activating or reactivating silver substrate catalysts having promoter metals used in the production of ethylene oxide by oxidizing ethylene with oxygen or with gases containing oxygen. At least part of the mixture of reaction gases is made to pass at least in part through a bed arranged before the catalyst zone, this bed containing uniformly distributed compounds of the promoter metals.