Influence of the support in aqueous phase oxidation of ethanol on gold/metal oxide catalysts studied by ATR-IR spectroscopy under working conditions

Waheed, Ammara; Wang, Xianwei; Maeda, Nobutaka; Meier, Daniel Matthias; Ishida, Tamao; Murayama, Toru; Haruta, Masatake; Baiker, Alfons

doi:10.1016/j.catcom.2020.106183

Please use this identifier to cite or link to this item: https://doi.org/10.21256/zhaw-20608

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Influence of the support in aqueous phase oxidation of ethanol on gold/metal oxide catalysts studied by ATR-IR spectroscopy under working conditions
Authors:	Waheed, Ammara Wang, Xianwei Maeda, Nobutaka Meier, Daniel Matthias Ishida, Tamao Murayama, Toru Haruta, Masatake Baiker, Alfons
et. al:	No
DOI:	10.1016/j.catcom.2020.106183 10.21256/zhaw-20608
Published in:	Catalysis Communications
Volume(Issue):	148
Issue:	106183
Issue Date:	2021
Publisher / Ed. Institution:	Elsevier
ISSN:	1566-7367
Language:	English
Subjects:	Ethanol oxidation; Acetic acid; Gold catalysis; Effect of support; In situ ATR-IR spectroscopy
Subject (DDC):	660: Chemical engineering
Abstract:	Effects of supports (Co3O4, CeO2, NiO) in the gold-catalyzed aqueous phase oxidation of ethanol (EtOH) to acetic acid (AcOH) were examined. ATR-IR spectroscopy under working conditions of the catalysts uncovered on gold particles bidentate ethoxy, and on supports monodentate ethoxy species, multi-layered ethanol, and acetate. Preferential formation of bidentate ethoxy species and adsorbed EtOH were identified as key factors for high activity and selectivity to AcOH. These requirements were best matched with Au/Co3O4. On NiO, monodentate ethoxy species on the support deteriorated the catalytic performance due to consecutive esterification of AcOH and/or acetate species with EtOH producing undesirable ethyl acetate.
URI:	https://digitalcollection.zhaw.ch/handle/11475/20608
Fulltext version:	Published version
License (according to publishing contract):	CC BY-NC-ND 4.0: Attribution - Non commercial - No derivatives 4.0 International
Departement:	School of Engineering
Organisational Unit:	Institute of Materials and Process Engineering (IMPE)
Appears in collections:	Publikationen School of Engineering

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Waheed, A., Wang, X., Maeda, N., Meier, D. M., Ishida, T., Murayama, T., Haruta, M., & Baiker, A. (2021). Influence of the support in aqueous phase oxidation of ethanol on gold/metal oxide catalysts studied by ATR-IR spectroscopy under working conditions. Catalysis Communications, 148(106183). https://doi.org/10.1016/j.catcom.2020.106183

Waheed, A. et al. (2021) ‘Influence of the support in aqueous phase oxidation of ethanol on gold/metal oxide catalysts studied by ATR-IR spectroscopy under working conditions’, Catalysis Communications, 148(106183). Available at: https://doi.org/10.1016/j.catcom.2020.106183.

A. Waheed et al., “Influence of the support in aqueous phase oxidation of ethanol on gold/metal oxide catalysts studied by ATR-IR spectroscopy under working conditions,” Catalysis Communications, vol. 148, no. 106183, 2021, doi: 10.1016/j.catcom.2020.106183.

WAHEED, Ammara, Xianwei WANG, Nobutaka MAEDA, Daniel Matthias MEIER, Tamao ISHIDA, Toru MURAYAMA, Masatake HARUTA und Alfons BAIKER, 2021. Influence of the support in aqueous phase oxidation of ethanol on gold/metal oxide catalysts studied by ATR-IR spectroscopy under working conditions. Catalysis Communications. 2021. Bd. 148, Nr. 106183. DOI 10.1016/j.catcom.2020.106183

Waheed, Ammara, Xianwei Wang, Nobutaka Maeda, Daniel Matthias Meier, Tamao Ishida, Toru Murayama, Masatake Haruta, and Alfons Baiker. 2021. “Influence of the Support in Aqueous Phase Oxidation of Ethanol on Gold/Metal Oxide Catalysts Studied by ATR-IR Spectroscopy under Working Conditions.” Catalysis Communications 148 (106183). https://doi.org/10.1016/j.catcom.2020.106183.

Waheed, Ammara, et al. “Influence of the Support in Aqueous Phase Oxidation of Ethanol on Gold/Metal Oxide Catalysts Studied by ATR-IR Spectroscopy under Working Conditions.” Catalysis Communications, vol. 148, no. 106183, 2021, https://doi.org/10.1016/j.catcom.2020.106183.