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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
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.
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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