| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 45787 | Applied Catalysis B: Environmental | 2013 | 7 Pages |
Bulk and carbon nanofiber supported MgAl hydrotalcites have been investigated as solid base catalysts for the synthesis of glycerol carbonate and dicarbonate and for the self-condensation of acetone. The supported materials exhibited a 300 times higher activity compared to bulk activated hydrotalcites for the transesterification. The materials could be reused while maintaining a high yield of glycerol carbonate. The activity of the mixed oxide, i.e., hydrotalcite materials after high temperature activation was considerably higher than both gas-phase and liquid phase rehydrated samples for the glycerol reactions. In contrast in the acetone self-condensation reaction the rehydrated samples were more active. This indicates that the polarity of the catalyst related to the reactant properties has a huge impact on the performance of a solid base catalyst.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Synthesis and activation of HT supported on carbon nanofibers, ascertained by XRD. ► In the synthesis of glycerol carbonate these solids show a high activity. ► These solids are noteworthy more basic than bulk HT. ► These solids could be reused several times maintaining high activity. ► The polarity difference between bulk and supported HT is important for the activity.
