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The influence of CO adsorption on the surface composition of cobalt/palladium alloys

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dc.contributor.authorMurdoch, A.
dc.contributor.authorTrant, A.G.
dc.contributor.authorGustafson, J.
dc.contributor.authorJones, Timothy Edward
dc.contributor.authorNoakes, T.C.Q.
dc.contributor.authorBailey, P.
dc.contributor.authorBaddeley, C.J.
dc.date.accessioned2016-08-12T23:33:28Z
dc.date.available2016-08-12T23:33:28Z
dc.date.issued2016-04
dc.identifier.citationMurdoch , A , Trant , A G , Gustafson , J , Jones , T E , Noakes , T C Q , Bailey , P & Baddeley , C J 2016 , ' The influence of CO adsorption on the surface composition of cobalt/palladium alloys ' , Surface Science , vol. In press . https://doi.org/10.1016/j.susc.2015.08.004en
dc.identifier.issn0039-6028
dc.identifier.otherPURE: 209392801
dc.identifier.otherPURE UUID: cb7d8906-1af8-40f0-82e9-7b8a9a22313f
dc.identifier.otherRIS: urn:05DC783050836A7A37DDB2B6CB89C0B6
dc.identifier.otherScopus: 84956586676
dc.identifier.otherORCID: /0000-0001-9750-6494/work/57330822
dc.identifier.otherWOS: 000374916900007
dc.identifier.urihttps://hdl.handle.net/10023/9297
dc.descriptionAM is grateful for funding from SASOL Technology UK Ltd (PhD studentship); JG is grateful for the award of a fellowship from the Knut and Alice Wallenberg Foundation. TEJ and AGT acknowledge EPSRC funding of postdoctoral research (EP/E047580/1). The MEIS facility was funded via EPSRC grant EP/E003370/1.en
dc.description.abstractSegregation induced by the adsorption of gas phase species can strongly influence the composition of bimetallic surfaces and can therefore play an important role in influencing heterogeneous catalytic reactions. The addition of palladium to cobalt catalysts has been shown to promote Fischer Tropsch catalysis. We investigate the adsorption of CO onto bimetallic CoPd surfaces on Pd{111} using a combination of reflection absorption infrared spectroscopy and medium energy ion scattering. The vibrational frequency of adsorbed CO provides crucial information on the adsorption sites adopted by CO and medium energy ion scattering probes the surface composition before and after CO exposure. We show that cobalt segregation is induced by CO adsorption and rationalise these observations in terms of the strength of adsorption of CO in various surface adsorption sites.
dc.language.isoeng
dc.relation.ispartofSurface Scienceen
dc.rightsCopyright © 2015 Published by Elsevier B.V. This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1016/j.susc.2015.08.004en
dc.subjectMedium energy ion scatteringen
dc.subjectVibrational spectroscopyen
dc.subjectAlloyen
dc.subjectQD Chemistryen
dc.subjectDASen
dc.subject.lccQDen
dc.titleThe influence of CO adsorption on the surface composition of cobalt/palladium alloysen
dc.typeJournal articleen
dc.contributor.sponsorEPSRCen
dc.description.versionPostprinten
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.identifier.doihttps://doi.org/10.1016/j.susc.2015.08.004
dc.description.statusPeer revieweden
dc.date.embargoedUntil2016-08-12
dc.identifier.grantnumberEP/E047580/1en


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