Samenvatting
The kinetics of the liquid-phase hydrogenation of citral (3,7-dimethyl-2,6-octadienal) on Au/TiO2 and Pt–Sn/TiO2 thin films was studied in the temperature range 313–353 K and citral concentrations of 0.25–10.0 mol m-3. The thin films were deposited onto the inner walls of silica capillaries with internal diameter of 250 µm. First-order dependence on hydrogen pressure and near zero order dependence on citral concentration were observed for the initial rate of citral hydrogenation over the Pt–Sn/TiO2 and Au/TiO2 thin films. The Au/TiO2 catalyst prevents citronellal formation. The highest yield of unsaturated alcohols was obtained on the Pt–Sn/TiO2 film at a reaction temperature of 343 K, liquid residence time of 30 min and a citral conversion of 99%.
Originele taal-2 | Engels |
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Pagina's (van-tot) | 12-21 |
Aantal pagina's | 10 |
Tijdschrift | Applied Catalysis. A, General |
Volume | 399 |
Nummer van het tijdschrift | 1-2 |
DOI's | |
Status | Gepubliceerd - 2011 |