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Materials 2013, 6(8), 3556-3570; doi:10.3390/ma6083556
Article

Periodic Mesoporous Organosilica Functionalized with Sulfonic Acid Groups as Acid Catalyst for Glycerol Acetylation

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Received: 11 July 2013 / Revised: 1 August 2013 / Accepted: 13 August 2013 / Published: 16 August 2013
(This article belongs to the Section Porous Materials)
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Abstract

A Periodic Mesoporous Organosilica (PMO) functionalized with sulfonic acid groups has been successfully synthesized via a sequence of post-synthetic modification steps of a trans-ethenylene bridged PMO material. The double bond is functionalized via a bromination and subsequent substitution obtaining a thiol functionality. This is followed by an oxidation towards a sulfonic acid group. After full characterization, the solid acid catalyst is used in the acetylation of glycerol. The catalytic reactivity and reusability of the sulfonic acid modified PMO material is investigated. The catalyst showed a catalytic activity and kinetics that are comparable with the commercially available resin, Amberlyst-15, and furthermore our catalyst can be recycled for several subsequent catalytic runs and retains its catalytic activity.
Keywords: Periodic Mesoporous Organosilica; sulfonic acid groups; catalysis; glycerol acetylation Periodic Mesoporous Organosilica; sulfonic acid groups; catalysis; glycerol acetylation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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De Canck, E.; Dosuna-Rodríguez, I.; Gaigneaux, E.M.; Van Der Voort, P. Periodic Mesoporous Organosilica Functionalized with Sulfonic Acid Groups as Acid Catalyst for Glycerol Acetylation. Materials 2013, 6, 3556-3570.

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