| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 50422 | Catalysis Communications | 2014 | 5 Pages |
•Pt/TiO2 and Pt/S20 catalysts are synthesized and characterized.•Performances are evaluated for glycerol and 1,2-propanediol aqueous phase reaction.•Textural and structural modifications of catalysts occur during catalytic test.•Metallic and acidic sites are involved in the selective CO cleavage of polyol.•Glycerol is strongly adsorbed on the catalyst surface compared to 1,2-propanediol.
Pt-based catalysts supported on TiO2 and SIRAL 20 (Al2O3–20 wt.%SiO2) were prepared and characterized by H2 chemisorption, FTIR of adsorbed pyridine and 3,3-dimethyl-1-butene isomerization. The catalysts were evaluated for the transformation under aqueous phase of glycerol and 1,2-propanediol at 210 °C, under 60 bar as total pressure (H2 atmosphere). Under similar conditions, 1,2-propanediol is easier converted than glycerol, indicating that in the glycerol transformation process in aqueous phase, the 1,2-propanediol reactivity is inhibited by the presence of glycerol. This behavior is explained by a strong adsorption of glycerol compared to 1,2-propanediol on the catalyst surface.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
