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Theses

Oxydation par l’oxygène moléculaire d’alcools en phase liquide en synthons carbonyles

Abstract : The selective alcohols oxidation to aldehydes, acids and ketones is an important transformation in chemistry. The use of molecular oxygen as oxidant is in adequation with a green chemistry perspective, since water is the only by-product. The oxidation of primary alcohols (1-octanol and geraniol) and secondary alcohols (2-octanol, 1-phenylethanol and pyridine substituted alcohols) has been studied in the presence of platinum supported carbon catalysts under air pressure in organic or mixed organic/aqueous media. The results have shown a strong influence of the solvent on the catalytic activity, with an important promoting effect of water on the reaction. This effect has been discussed based on several hypotheses. The promotion of platinum supported catalysts by bismuth has shown some modifications of the activity, with a positive effect in particular in the oxidation of secondary heteroaromatic alcohols. The deactivation observed during the oxidation reaction of some substrates has been analyzed and some solutions have been proposed to overcome the problem.
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  • HAL Id : tel-00833386, version 1

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Antonio Frassoldati. Oxydation par l’oxygène moléculaire d’alcools en phase liquide en synthons carbonyles. Autre. Université Claude Bernard - Lyon I, 2011. Français. ⟨NNT : 2011LYO10228⟩. ⟨tel-00833386⟩

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