| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50132 | Catalysis Communications | 2013 | 5 Pages |
Pt-based catalysts, supported on Al2O3, SiO2 and SiO2–Al2O3, were prepared by incipient wetness impregnation and tested in the gas phase hydrogenation of maleic anhydride at atmospheric pressure and 240 °C. In these conditions, the hydrogenolytic activity pattern was: Pt/SiO2 > Pt/Al2O3 > Pt/SiO2–Al2O3, which is just the opposite of the support acidity trend. These metal Pt-based catalysts showed high selectivity to propionic acid, which was always higher than 80%. The selectivity pattern to this product was: Pt/Al2O3 > Pt/SiO2 > Pt/SiO2–Al2O3. Both activity and selectivity patterns may be explained on the basis of metal-support interaction and support acidity.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► A novel one-step process for propionic acid production in gas phase is proposed. ► Succinic anhydride is selectively converted into propionic acid on Pt-based catalysts. ► Support acidity plays an important role on succinic anhydride hydrogenolysis. ► Propionic acid yield increases as support acidity and Pt-support interaction decrease.
