Operando Observation of Oxygenated Intermediates during CO Hydrogenation on Rh Single Crystals

The CO hydrogenation reaction over the Rh(111) and (211) surfaces has been investigated operando by X-ray photoelectron spectroscopy at a pressure of 150 mbar. Observations of the resting state of the catalyst give mechanistic insight into the selectivity of Rh for generating ethanol from CO hydroge...

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Published inJournal of the American Chemical Society Vol. 144; no. 16; pp. 7038 - 7042
Main Authors Degerman, David, Shipilin, Mikhail, Lömker, Patrick, Goodwin, Christopher M, Gericke, Sabrina M, Hejral, Uta, Gladh, Jörgen, Wang, Hsin-Yi, Schlueter, Christoph, Nilsson, Anders, Amann, Peter
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 27.04.2022
Subjects
Chemical Sciences
Communication
Inorganic Chemistry
Kemi
Natural Sciences
Naturvetenskap
Oorganisk kemi
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Summary:The CO hydrogenation reaction over the Rh(111) and (211) surfaces has been investigated operando by X-ray photoelectron spectroscopy at a pressure of 150 mbar. Observations of the resting state of the catalyst give mechanistic insight into the selectivity of Rh for generating ethanol from CO hydrogenation. This study shows that the Rh(111) surface does not dissociate all CO molecules before hydrogenation of the O and C atoms, which allows methoxy and other both oxygenated and hydrogenated species to be visible in the photoelectron spectra.
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ISSN:0002-7863
1520-5126
1520-5126
DOI:10.1021/jacs.2c00300