Probing surface properties and reaction intermediates during heterogeneous catalytic oxidation of acetaldehyde

Richard Kydd; Wey Yang Teoh; Jason Scott; Davide Ferri; Rose Amal

doi:10.1002/cctc.200900099

Probing surface properties and reaction intermediates during heterogeneous catalytic oxidation of acetaldehyde

Richard Kydd
, Wey Yang Teoh
, Jason Scott
, Davide Ferri
, Rose Amal

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

25 Citations (Scopus)

Abstract

The influence of Cu on various metal oxide supports was investigated for the catalytic oxidation of acetaldehyde (ACA). The activity of the catalysts towards ACA conversion and the CO₂ yield decrease in the order: Cu/CeO₂>Cu/TiO₂≈Cu/ZrO₂> Cu/Al ₂O₃>Cu/SiO₂. Spontaneous adsorptive conversion of ACA to surface carboxylates, such as bridging and bidentate acetates, was detected over the basic supports CeO₂, TiO₂, and ZrO₂. Detailed temperature-programmed studies found the high activity of Cu/CeO₂ to stem mainly from the intrinsically high activity of the CeO₂ support. In contrast, similar studies on Cu/TiO₂ demonstrated the activity improvements imparted by Cu were predominantly additive. Despite the difference in origin of ACA oxidation activity over Cu/CeO₂ and Cu/TiO₂, the overall concerted effects of basicity-induced carboxylate formation and availability of surface oxygen were thought to be overriding factors crucial in the overall catalytic reactivity. © 2009 Wiley-VCH Verlag GmbH& Co. KGaA, Weinheim.

Original language	English
Pages (from-to)	286-294
Journal	ChemCatChem
Volume	1
Issue number	2
DOIs	https://doi.org/10.1002/cctc.200900099
Publication status	Published - 5 Oct 2009
Externally published	Yes

Research Keywords

Aldehydes
Copper
Heterogeneous catalysis
Surface chemistry
Temperature-programmed desorption

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title = "Probing surface properties and reaction intermediates during heterogeneous catalytic oxidation of acetaldehyde",

abstract = "The influence of Cu on various metal oxide supports was investigated for the catalytic oxidation of acetaldehyde (ACA). The activity of the catalysts towards ACA conversion and the CO2 yield decrease in the order: Cu/CeO2>Cu/TiO2≈Cu/ZrO2> Cu/Al 2O3>Cu/SiO2. Spontaneous adsorptive conversion of ACA to surface carboxylates, such as bridging and bidentate acetates, was detected over the basic supports CeO2, TiO2, and ZrO2. Detailed temperature-programmed studies found the high activity of Cu/CeO2 to stem mainly from the intrinsically high activity of the CeO2 support. In contrast, similar studies on Cu/TiO2 demonstrated the activity improvements imparted by Cu were predominantly additive. Despite the difference in origin of ACA oxidation activity over Cu/CeO2 and Cu/TiO2, the overall concerted effects of basicity-induced carboxylate formation and availability of surface oxygen were thought to be overriding factors crucial in the overall catalytic reactivity. {\textcopyright} 2009 Wiley-VCH Verlag GmbH\& Co. KGaA, Weinheim.",

keywords = "Aldehydes, Copper, Heterogeneous catalysis, Surface chemistry, Temperature-programmed desorption",

author = "Richard Kydd and Teoh, \{Wey Yang\} and Jason Scott and Davide Ferri and Rose Amal",

year = "2009",

month = oct,

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doi = "10.1002/cctc.200900099",

language = "English",

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TY - JOUR

T1 - Probing surface properties and reaction intermediates during heterogeneous catalytic oxidation of acetaldehyde

AU - Kydd, Richard

AU - Teoh, Wey Yang

AU - Scott, Jason

AU - Ferri, Davide

AU - Amal, Rose

PY - 2009/10/5

Y1 - 2009/10/5

N2 - The influence of Cu on various metal oxide supports was investigated for the catalytic oxidation of acetaldehyde (ACA). The activity of the catalysts towards ACA conversion and the CO2 yield decrease in the order: Cu/CeO2>Cu/TiO2≈Cu/ZrO2> Cu/Al 2O3>Cu/SiO2. Spontaneous adsorptive conversion of ACA to surface carboxylates, such as bridging and bidentate acetates, was detected over the basic supports CeO2, TiO2, and ZrO2. Detailed temperature-programmed studies found the high activity of Cu/CeO2 to stem mainly from the intrinsically high activity of the CeO2 support. In contrast, similar studies on Cu/TiO2 demonstrated the activity improvements imparted by Cu were predominantly additive. Despite the difference in origin of ACA oxidation activity over Cu/CeO2 and Cu/TiO2, the overall concerted effects of basicity-induced carboxylate formation and availability of surface oxygen were thought to be overriding factors crucial in the overall catalytic reactivity. © 2009 Wiley-VCH Verlag GmbH& Co. KGaA, Weinheim.

AB - The influence of Cu on various metal oxide supports was investigated for the catalytic oxidation of acetaldehyde (ACA). The activity of the catalysts towards ACA conversion and the CO2 yield decrease in the order: Cu/CeO2>Cu/TiO2≈Cu/ZrO2> Cu/Al 2O3>Cu/SiO2. Spontaneous adsorptive conversion of ACA to surface carboxylates, such as bridging and bidentate acetates, was detected over the basic supports CeO2, TiO2, and ZrO2. Detailed temperature-programmed studies found the high activity of Cu/CeO2 to stem mainly from the intrinsically high activity of the CeO2 support. In contrast, similar studies on Cu/TiO2 demonstrated the activity improvements imparted by Cu were predominantly additive. Despite the difference in origin of ACA oxidation activity over Cu/CeO2 and Cu/TiO2, the overall concerted effects of basicity-induced carboxylate formation and availability of surface oxygen were thought to be overriding factors crucial in the overall catalytic reactivity. © 2009 Wiley-VCH Verlag GmbH& Co. KGaA, Weinheim.

KW - Aldehydes

KW - Copper

KW - Heterogeneous catalysis

KW - Surface chemistry

KW - Temperature-programmed desorption

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UR - https://www.scopus.com/pages/publications/77955352680#tab=impact

U2 - 10.1002/cctc.200900099

DO - 10.1002/cctc.200900099

M3 - RGC 21 - Publication in refereed journal

SN - 1867-3880

VL - 1

SP - 286

EP - 294

JO - ChemCatChem

JF - ChemCatChem

IS - 2

ER -

Probing surface properties and reaction intermediates during heterogeneous catalytic oxidation of acetaldehyde

Abstract

Research Keywords

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