Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)

[Image: see text] Stepped metal surfaces are usually assumed to exhibit an increased catalytic activity for bond cleavage of small molecules over their flat single-crystal counterparts. We present experimental and theoretical data on the dissociative adsorption of molecular hydrogen on copper that c...

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Autores principales: Füchsel, Gernot, Cao, Kun, Er, Süleyman, Smeets, Egidius W. F., Kleyn, Aart W., Juurlink, Ludo B. F., Kroes, Geert-Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5759030/
https://www.ncbi.nlm.nih.gov/pubmed/29262681
http://dx.doi.org/10.1021/acs.jpclett.7b03097
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author Füchsel, Gernot
Cao, Kun
Er, Süleyman
Smeets, Egidius W. F.
Kleyn, Aart W.
Juurlink, Ludo B. F.
Kroes, Geert-Jan
author_facet Füchsel, Gernot
Cao, Kun
Er, Süleyman
Smeets, Egidius W. F.
Kleyn, Aart W.
Juurlink, Ludo B. F.
Kroes, Geert-Jan
author_sort Füchsel, Gernot
collection PubMed
description [Image: see text] Stepped metal surfaces are usually assumed to exhibit an increased catalytic activity for bond cleavage of small molecules over their flat single-crystal counterparts. We present experimental and theoretical data on the dissociative adsorption of molecular hydrogen on copper that contradicts this notion. We observe hydrogen molecules to be more reactive on the flat Cu(111) than on the stepped Cu(211) surface. We suggest that this exceptional behavior is due to a geometric effect, that is, that bond cleavage on the flat surface does not occur preferentially over a top site.
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spelling pubmed-57590302018-01-10 Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211) Füchsel, Gernot Cao, Kun Er, Süleyman Smeets, Egidius W. F. Kleyn, Aart W. Juurlink, Ludo B. F. Kroes, Geert-Jan J Phys Chem Lett [Image: see text] Stepped metal surfaces are usually assumed to exhibit an increased catalytic activity for bond cleavage of small molecules over their flat single-crystal counterparts. We present experimental and theoretical data on the dissociative adsorption of molecular hydrogen on copper that contradicts this notion. We observe hydrogen molecules to be more reactive on the flat Cu(111) than on the stepped Cu(211) surface. We suggest that this exceptional behavior is due to a geometric effect, that is, that bond cleavage on the flat surface does not occur preferentially over a top site. American Chemical Society 2017-12-20 2018-01-04 /pmc/articles/PMC5759030/ /pubmed/29262681 http://dx.doi.org/10.1021/acs.jpclett.7b03097 Text en Copyright © 2017 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Füchsel, Gernot
Cao, Kun
Er, Süleyman
Smeets, Egidius W. F.
Kleyn, Aart W.
Juurlink, Ludo B. F.
Kroes, Geert-Jan
Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)
title Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)
title_full Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)
title_fullStr Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)
title_full_unstemmed Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)
title_short Anomalous Dependence of the Reactivity on the Presence of Steps: Dissociation of D(2) on Cu(211)
title_sort anomalous dependence of the reactivity on the presence of steps: dissociation of d(2) on cu(211)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5759030/
https://www.ncbi.nlm.nih.gov/pubmed/29262681
http://dx.doi.org/10.1021/acs.jpclett.7b03097
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