Selective hydrogenation of cyclododecatriene to cyclododecene

US7253329B2 · kind B2 · utility

Assignee

• Degussa AG · DE

Inventors

• Juergen Herwig
• Norbert Wilczok · Wiesloch, DE
• Martin Roos · Oestrich-Winkel, DE
• Rudolf Burghardt · Darmstadt, DE
• Johann Gaube · Roßdorf, DE
• Georg Oenbrink · Schneverdingen, DE
• Bernd Guenzel · Haltern am See, DE

Key dates

• Filing date: Mar 2, 2004
• Grant date: Aug 7, 2007
• Expiry date: Aug 6, 2025

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2523/44
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for preparing cyclododecene by selective gas-phase hydrogenation of at least one starting material selected from cyclododecatriene, cyclododecadiene and mixtures thereof, wherein the starting material present in the gas phase is hydrogenated in the presence of a catalyst in a fixed-bed reactor and the Bodenstein number for the process is greater than 100.