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Hydrierung von Crotonaldlehyd und Acetaldol mit modifizierten Pd-Trägerkatalysatoren I. Zum Einfluß einer Titaniummodifizierung auf Pd/AI2O3-Katalysatoren

✍ Scribed by Dr. D. Bohm; Prof. Dr. P. Kripylo; Dipl.-Chem. M. Raminoarison

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
513 KB
Volume
332
Category
Article
ISSN
1615-4150

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✦ Synopsis

Hydrogenation of Crotonaldehyde and Acetaldole with Modified Pd Carrier Catalysts. I. On the Influence of a Titanium Modification to Pd/Al~2~O~3~ Catalysts

The modification of Pd/Al~2~O~3~ catalysts with titanium was studied in the hydrogenation of crotonaldehyde and acetaldole. In the result of the titanium modification the hydrogenation activity is increased and the formation of carbon monoxide is decreased. An electronic and geometric ensemble effect should be the reason for the palladium titanium interaction. The mechanism of the acetaldole conversion to butyraldehyde at 160°C is mainly determined by hydrogenolysis in one step and at 200°C by two steps consisting in dehydratization and hydrogenation.

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