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Acetylation of Glycerol Catalyzed by Different Solid Acids by Valter L.C. Gonçalves; Bianca P. Pinto; João C. Silva; Claudio J.A. Mota is a Materials Science article available to read on EtoBox.

What is Acetylation of Glycerol Catalyzed by Different Solid Acids about?

This work describes the acetylation of glycerol with acetic acid catalyzed by different solid acids. Reactions were carried out in batch mode under reflux. The kinetics of glycerol transformation and selectivity to the products, notably mono, di and triacetyl esters, were determined within 30min of reaction time to observe the primary products. The results showed that the acid exchange resin, Amberlyst-15, was the most active catalyst, achieving 97% conversion in this period, followed by K-10 montmorillonite, niobic acid, HZSM-5 and HUSY. The selectivity varied for each catalyst and conversion degree, but the yield of di and triacetylated products increased with increasing conversion and reaction time. In all cases, the formation of α-hydroxy-acetone (acetol) was observed and associated with the glycerol dehydration. The poor performance of the zeolites might be related to diffusion problems of the acetylated esters inside the cavities.

Who reads Acetylation of Glycerol Catalyzed by Different Solid Acids?

Author

Valter L.C. Gonçalves; Bianca P. Pinto; João C. Silva; Claudio J.A. Mota

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0920-5861)

Published

2008

Language

EN

Field

Materials Science (Physical Sciences)