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US 7,253,329 B2Granted
Selective hydrogenation of cyclododecatriene to cyclododecene
AssigneeDegussa AG
InventorsJuergen Herwig, Norbert Wilczok, Martin Roos, Rudolf Burghardt, Johann Gaube, Georg Oenbrink, Bernd Guenzel
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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.
Claims32
A process for preparing cyclododecene, comprising:
- contacting at least one starting material selected from the group consisting of cyclododecatriene, cyclododecadiene and mixtures thereof, in the gas-phase with a catalyst in a fixed-bed reactor in the presence of hydrogen, thereby preparing said cyclododecene product,
- wherein the Bodenstein number in the fixed-bed reactor is greater than 100.
Dependencies are inferred from the claim text.