Process for the epoxidation of propene

US6878836B2 · kind B2 · utility

Assignees

• Degussa AG · DE
• UHDE GMBH · DE

Inventors

• Thomas Haas · Munster, DE
• Claudia Brasse · Hanau, DE
• Wolfgang Wöll · Maintal, DE
• Willi Hofen · Rodenbach, DE
• Bernd Jaeger · Emmelshausen, DE
• Guido Stochniol · Haltern am See, DE
• Norbert Ullrich · Essen, DE

Key dates

• Filing date: May 5, 2004
• Grant date: Apr 12, 2005
• Expiry date: May 5, 2024

Classification

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

Abstract

A process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100° C. and the epoxidation reaction is carried out for periods of more than 300 h between two regeneration steps.