Wu, G;
Brett, GL;
Cao, E;
Constantinou, A;
Ellis, P;
Kuhn, S;
Hutchings, GJ;
... Gavriilidis, A; + view all
(2016)
Oxidation of cinnamyl alcohol using bimetallic Au-Pd/TiO2 catalysts: a deactivation study in a continuous flow packed bed microreactor.
Catalysis Science & Technology
, 6
(13)
pp. 4749-4758.
10.1039/c6cy00232c.
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Abstract
The stability of a bimetallic Au–Pd/TiO2 catalyst was examined in a packed bed microreactor for the oxidation of cinnamyl alcohol dissolved in toluene. The catalyst was prepared by co-impregnation with a Au–Pd weight ratio of 1 : 19. Experiments were performed at 80–120 °C, oxygen concentration 0–100% and total pressure 4 bara. Principal products observed were cinnamaldehyde, 3-phenyl-1-propanol and trans-β-methylstyrene. Although the same catalyst was shown to possess good stability in the oxidation of benzyl alcohol, it deactivated during the oxidation of cinnamyl alcohol, particularly at elevated reaction temperatures. Higher concentration of oxygen used for the reaction led to improved cinnamaldehyde selectivity but lower conversion and higher deactivation rates. Treatment with hydrogen recovered only a fraction of the activity. Deactivation was attributed to Pd leaching and a complex effect of oxygen.
| Type: | Article |
|---|---|
| Title: | Oxidation of cinnamyl alcohol using bimetallic Au-Pd/TiO2 catalysts: a deactivation study in a continuous flow packed bed microreactor |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1039/c6cy00232c |
| Publisher version: | http://dx.doi.org/10.1039/c6cy00232c |
| Language: | English |
| Additional information: | This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence |
| Keywords: | Science & Technology, Physical Sciences, Chemistry, Physical, Chemistry, LIQUID-PHASE OXIDATION, SELECTIVE OXIDATION, AEROBIC OXIDATION, HETEROGENEOUS CATALYST, MOLECULAR-OXYGEN, PALLADIUM, PD, NANOPARTICLES, ALDEHYDES, SOLVENT |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1506924 |
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