Structure-reactivity correlations in the selective aerobic oxidation of cinnamyl alcohol: in situ XAFS

Adam F. Lee, Karen Wilson

Research output: Contribution to journalArticle

Abstract

The structural evolution of a Pd/C catalyst during the liquid phase selective aerobic oxidation of cinnamyl alcohol has been followed by in situ XAFS and XPS. The fresh catalyst comprised highly dispersed, heavily oxidised Pd particles. Cinnamyl alcohol oxidation resulted in the rapid reduction of surface palladium oxide and a small degree of concomitant particle growth. These structural changes coincided with a large drop in catalytic activity. Prereduced Pd/C exhibited a significantly lower initial oxidation rate demonstrating the importance of surface metal oxide in effecting catalytic oxidation. Use of a Pd black model system confirmed that the oxide→metal transformation was the cause, and not result, of catalyst deactivation.
Original languageEnglish
Pages (from-to)37-42
Number of pages6
JournalGreen Chemistry
Volume6
Issue number1
Early online date21 Nov 2003
DOIs
Publication statusPublished - 2004

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