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

James Naughton; Adam F. Lee; Sarah Thompson; C. P. Vinod; Karen Wilson

doi:10.1039/b921669c

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

James Naughton, Adam F. Lee^*, Sarah Thompson, C. P. Vinod, Karen Wilson

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

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 (C(3)H(6)); only similar to 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.

Original language	English
Pages (from-to)	2670-2678
Number of pages	9
Journal	Physical Chemistry Chemical Physics
Volume	12
Issue number	11
DOIs	https://doi.org/10.1039/b921669c
Publication status	Published - 2010

Keywords

FORMIC-ACID
AEROBIC OXIDATION
X-RAY
ADSORPTION
PT(111) SURFACES
ALPHA,BETA-UNSATURATED ALDEHYDES
CROTYL ALCOHOL
PD(111)
BIMETALLIC SURFACES
SELECTIVE OXIDATION

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title = "Reactivity of crotonaldehyde and propene over Au/Pd(111) surfaces",

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 (C(3)H(6)); only similar to 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.",

keywords = "FORMIC-ACID, AEROBIC OXIDATION, X-RAY, ADSORPTION, PT(111) SURFACES, ALPHA,BETA-UNSATURATED ALDEHYDES, CROTYL ALCOHOL, PD(111), BIMETALLIC SURFACES, SELECTIVE OXIDATION",

author = "James Naughton and Lee, {Adam F.} and Sarah Thompson and Vinod, {C. P.} and Karen Wilson",

year = "2010",

doi = "10.1039/b921669c",

language = "English",

volume = "12",

pages = "2670--2678",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "The Royal Society of Chemistry",

number = "11",

}

TY - JOUR

T1 - Reactivity of crotonaldehyde and propene over Au/Pd(111) surfaces

AU - Naughton, James

AU - Lee, Adam F.

AU - Thompson, Sarah

AU - Vinod, C. P.

AU - Wilson, Karen

PY - 2010

Y1 - 2010

N2 - 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 (C(3)H(6)); only similar to 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.

AB - 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 (C(3)H(6)); only similar to 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.

KW - FORMIC-ACID

KW - AEROBIC OXIDATION

KW - X-RAY

KW - ADSORPTION

KW - PT(111) SURFACES

KW - ALPHA,BETA-UNSATURATED ALDEHYDES

KW - CROTYL ALCOHOL

KW - PD(111)

KW - BIMETALLIC SURFACES

KW - SELECTIVE OXIDATION

UR - http://www.scopus.com/inward/record.url?scp=77749304784&partnerID=8YFLogxK

U2 - 10.1039/b921669c

DO - 10.1039/b921669c

M3 - Article

SN - 1463-9076

VL - 12

SP - 2670

EP - 2678

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 11

ER -

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

Abstract

Keywords

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