| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 53476 | Catalysis Today | 2015 | 6 Pages |
•Pd and PdAu catalysts were tested in hydrogenation of levulinic acid in water.•Bimetallic PdAu on Ti doped silica showed the best performance.•Synergic effect of Au and Ti on Pd lead to PdTi alloy as active specie of catalyst.
The effect of different supports, silica HMS and Ti doped silica HMS, on the catalytic performance of mono (Pd) and bimetallic (Pd–Au, Pd–Re) catalysts, containing 2 wt% of each metal, for the hydrogenation of levulinic acid in water was studied. The catalytic behavior of the materials was evaluated in terms of conversion of the starting levulinic acid and selectivity to γ-valerolactone. The surface and structural properties of the catalysts were investigated by means of X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) performed on fresh and spent materials. A synergic effect of Au and Ti on Pd sample was observed with the consequent formation of a PdTi alloy responsible of the good performance of the catalyst.
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