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Catalytic hydrogenolysis of sorbitol

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Abstract

Sorbitol hydrogenolysis on a Ru catalyst shows a dependence on pH and temperature. In a basic medium, the main reaction is a reverse aldolization which gives, among others, a mixture of products containing two or three carbon atoms independently of the temperature. In a neutral medium, the lowering of the temperature leads to an increase in selectivity of hydrogenolysis in the middle of the carbon chain of sorbitol, giving mainly glycerol and 1,2-propanediol. The competition between the hydrogenolysis of C−C and C−O bonds is also discussed.

Abstract

Гидрогенолиз сорбитола на Ru катализаторе зависит от рН и температуры. В щелочной среде основная — зто обратная альдолизация, которая дает, среди прочих, смесь продуктов, содержаших два или три атома углерода, независимо от температуры. В нейтральной среде понижение температу ры приводит к увеличению селективности гидрогенолиза в середине углеродной цепочки сорбитола, давая, в основном, глицерин и 1,2-пропандиол. Обсуждается также конкуренция гидрогенолиза связей C−C и C−O.

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Authors and Affiliations

  1. Groupe de Recherches sur la Catalyse en Chimie Organique ERA CNRS 371, Université de Poitiers, Laboratoire de Chimie 4 40, Avenue du Recteur Pineau, 86022, Poitiers-Cedex, France

    D. K. Sohounloue, C. Montassier & J. Barbier

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  1. D. K. Sohounloue
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  2. C. Montassier
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  3. J. Barbier
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Sohounloue, D.K., Montassier, C. & Barbier, J. Catalytic hydrogenolysis of sorbitol. React Kinet Catal Lett 22, 391–397 (1983). https://doi.org/10.1007/BF02066210

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  • DOI: https://doi.org/10.1007/BF02066210

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