UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Oxidation of cinnamyl alcohol using bimetallic Au-Pd/TiO2 catalysts: a deactivation study in a continuous flow packed bed microreactor

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. Green open access

[thumbnail of c6cy00232c.pdf]
Preview
Text
c6cy00232c.pdf - Published version

Download (3MB) | Preview

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
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item