Etherification of glycerol with ethanol over solid acid catalysts

Stephane Pariente; Nathalie Tanchoux; François Fajula

doi:10.1039/B905405G

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Green Chemistry

Issue 8, 2009

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Etherification of glycerol with ethanol over solid acid catalysts

Stephane Pariente , Nathalie Tanchoux and François Fajula

Green Chem., 2009, 11, 1256-1261

DOI: 10.1039/B905405G
Received 18 Mar 2009, Accepted 12 May 2009
First published on the web 08 Jun 2009

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Different types of acidic heterogeneous catalysts, including sulfonic resins, zeolites and grafted silicas are used for the synthesis of mono-ethers of glycerol using ethanol as the alcohol. The study shows that the performances of the catalysts are governed by both the acidity and the polarity of their surface. Materials with strong hydrophobic character are not active as they do not allow the adsorption of the glycerol. On the other hand a strong adsorption of glycerol on the polar surfaces leads to low activity as well. The best compromise has been found by using sulfonic-acid polystyrene resins of the Amberlyst family and zeolites with intermediate aluminium contents.

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Green Chemistry

Etherification of glycerol with ethanol over solid acid catalysts

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