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Gas phase hydrogenation of crotonaldehyde over platinum supported on oxidized carbon black

✍ Scribed by F. Coloma; J. Narciso-Romero; A. Sepúlveda-Escribano; F. Rodríguez-Reinoso

Publisher
Elsevier Science
Year
1998
Tongue
English
Weight
961 KB
Volume
36
Category
Article
ISSN
0008-6223

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✦ Synopsis

The effect of a previous oxidation treatment of the carbonaceous support on the catalytic behavior of platinum in the gas phase hydrogenation of crotonaldehyde (trans-2-butenal) over Pt/carbon black catalysts has been analyzed. Two heat-treated carbon blacks, one of them subjected to an oxidizing treatment with hydrogen peroxide, have been used as supports for platinum, which was introduced using H,PtCl, as metal precursor. The catalysts were characterized by Hz chemisorption at room temperature and temperature-programmed desorption, and their catalytic behavior in the gas phase hydrogenation of crotonaldehyde was determined under differential conditions. Both the specific catalytic activity and the selectivity towards the formation of the unsaturated alcohol (crotyl alcohol) in the title reaction have been found to be higher for the catalyst with the oxidized support, and they are enhanced after reduction at increasing temperatures.

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