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Issue 11, 2010
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Reactivity of crotonaldehyde and propene over Au/Pd(111) surfaces

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Abstract

The surface chemistry of crotonaldehyde and propene, primary and secondary reaction products in the aerobic selective oxidation of crotyl alcohol, has been studied by temperature-programmed reaction over Au/Pd(111) surface alloys. Gold strongly promotes desorption versus reaction at mole fractions ≥0.3 (crotonaldehyde) and ≥0.8 (C3H6); only ∼5% of the chemisorbed aldehyde or alkene react over Au-rich alloys. Surprisingly, co-adsorbed oxygen strongly suppresses crotonaldehyde decomposition over both clean Pd(111) and alloy surfaces, while C3H6 combustion, an important undesired side-reaction over unpromoted Pd(111), is also moderated by Au.

Graphical abstract: Reactivity of crotonaldehyde and propene over Au/Pd(111) surfaces

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Article information


Submitted
20 Oct 2009
Accepted
17 Dec 2009
First published
27 Jan 2010

Phys. Chem. Chem. Phys., 2010,12, 2670-2678
Article type
Paper

Reactivity of crotonaldehyde and propene over Au/Pd(111) surfaces

J. Naughton, A. F. Lee, S. Thompson, C. P. Vinod and K. Wilson, Phys. Chem. Chem. Phys., 2010, 12, 2670 DOI: 10.1039/B921669C

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