TY  - JOUR
EP  - 4758
Y1  - 2016/05/26/
AV  - public
TI  - Oxidation of cinnamyl alcohol using bimetallic Au-Pd/TiO2 catalysts: a deactivation study in a continuous flow packed bed microreactor
KW  - Science & Technology
KW  -  Physical Sciences
KW  -  Chemistry
KW  -  Physical
KW  -  Chemistry
KW  -  LIQUID-PHASE OXIDATION
KW  -  SELECTIVE OXIDATION
KW  -  AEROBIC OXIDATION
KW  -  HETEROGENEOUS CATALYST
KW  -  MOLECULAR-OXYGEN
KW  -  PALLADIUM
KW  -  PD
KW  -  NANOPARTICLES
KW  -  ALDEHYDES
KW  -  SOLVENT
PB  - ROYAL SOC CHEMISTRY
ID  - discovery1506924
N2  - 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-?-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.
N1  - This Open Access Article is licensed under a Creative Commons Attribution 3.0 Unported Licence
IS  - 13
SP  - 4749
VL  - 6
A1  - Wu, G
A1  - Brett, GL
A1  - Cao, E
A1  - Constantinou, A
A1  - Ellis, P
A1  - Kuhn, S
A1  - Hutchings, GJ
A1  - Bethell, D
A1  - Gavriilidis, A
JF  - Catalysis Science & Technology
SN  - 2044-4753
UR  - http://dx.doi.org/10.1039/c6cy00232c
ER  -