Unraveling the H2 Promotional Effect on Palladium-Catalyzed CO Oxidation Using a Combination of Temporally and Spatially Resolved Investigations

dc.bibliographicCitation.firstPage8255
dc.bibliographicCitation.issue9
dc.bibliographicCitation.lastPage8262
dc.bibliographicCitation.volume8
dc.contributor.authorStewart, Caomhán
dc.contributor.authorGibson, Emma K.
dc.contributor.authorMorgan, Kevin
dc.contributor.authorCibin, Giannantonio
dc.contributor.authorDent, Andrew J.
dc.contributor.authorHardacre, Christopher
dc.contributor.authorKondratenko, Evgenii V.
dc.contributor.authorKondratenko, Vita A.
dc.contributor.authorMcManus, Colin
dc.contributor.authorRogers, Scott
dc.contributor.authorStere, Cristina E.
dc.contributor.authorChansai, Sarayute
dc.contributor.authorWang, Yi-Chi
dc.contributor.authorHaigh, Sarah J.
dc.contributor.authorWells, Peter P.
dc.contributor.authorGoguet, Alexandre
dc.date.accessioned2023-04-13T08:40:05Z
dc.date.available2023-04-13T08:40:05Z
dc.date.issued2018
dc.description.abstractThe promotional effect of H2 on the oxidation of CO is of topical interest, and there is debate over whether this promotion is due to either thermal or chemical effects. As yet there is no definitive consensus in the literature. Combining spatially resolved mass spectrometry and X-ray absorption spectroscopy (XAS), we observe a specific environment of the active catalyst during CO oxidation, having the same specific local coordination of the Pd in both the absence and presence of H2. In combination with Temporal Analysis of Products (TAP), performed under isothermal conditions, a mechanistic insight into the promotional effect of H2 was found, providing clear evidence of nonthermal effects in the hydrogen-promoted oxidation of carbon monoxide. We have identified that H2 promotes the Langmuir-Hinshelwood mechanism, and we propose this is linked to the increased interaction of O with the Pd surface in the presence of H2. This combination of spatially resolved MS and XAS and TAP studies has provided previously unobserved insights into the nature of this promotional effect.eng
dc.description.versionpublishedVersioneng
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/11922
dc.identifier.urihttp://dx.doi.org/10.34657/10955
dc.language.isoeng
dc.publisherWashington, DC : ACS
dc.relation.doihttps://doi.org/10.1021/acscatal.8b01509
dc.relation.essn2155-5435
dc.relation.ispartofseriesACS Catalysis 8 (2018), Nr. 9eng
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0
dc.subjectCarbon monoxideeng
dc.subjectMass spectrometryeng
dc.subjectOxidationeng
dc.subjectX ray absorption spectroscopyeng
dc.subjectIsothermal conditionseng
dc.subjectLangmuir Hinshelwood mechanismeng
dc.subjectLocal coordinationeng
dc.subjectNon thermal effecteng
dc.subjectPromotional effecteng
dc.subjectSpatially resolvedeng
dc.subjectSpatially resolved mass spectrometryeng
dc.subjectTemporal analysis of producteng
dc.subjectPalladiumeng
dc.subject.ddc540
dc.titleUnraveling the H2 Promotional Effect on Palladium-Catalyzed CO Oxidation Using a Combination of Temporally and Spatially Resolved Investigationseng
dc.typearticle
dc.typeText
dcterms.bibliographicCitation.journalTitleACS Catalysis
tib.accessRightsopenAccess
wgl.contributorLIKAT
wgl.subjectChemieger
wgl.typeZeitschriftenartikelger
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