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Bjørk Hammer
Researcher at Aarhus University
Publications - 242
Citations - 42965
Bjørk Hammer is an academic researcher from Aarhus University. The author has contributed to research in topics: Density functional theory & Adsorption. The author has an hindex of 76, co-authored 231 publications receiving 37382 citations. Previous affiliations of Bjørk Hammer include Zhejiang University of Technology & Aalborg University.
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Journal ArticleDOI
Clustering of chemisorbed H(D) atoms on the graphite (0001) surface due to preferential sticking.
Liv Hornekær,E. Rauls,Wei Xu,Z. Sljivancanin,Roberto Otero,Ivan Stensgaard,Erik Lægsgaard,Bjørk Hammer,Flemming Besenbacher +8 more
TL;DR: The results show that diffusion of hydrogen atoms is largely inactive and that clustering is a consequence of preferential sticking into specific adsorbate structures, which point to a possible novel route to interstellar H2 formation.
Journal ArticleDOI
Special Sites at Noble and Late Transition Metal Catalysts
TL;DR: In this article, the Hammer-Norskov d-band model was introduced to model the electronic interaction underlying chemisorption at noble and late transition metal surfaces, and the reaction changes described by this model were characterized as an electronic structure effect.
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A density functional theory study of the adsorption of sulfur, mercapto, and methylthiolate on Au(111)
J. Gottschalck,Bjørk Hammer +1 more
TL;DR: In this article, the authors studied the adsorption of sulfur (S=), mercapto (HS), and methylthiolate (CH3S) on Au(111) and found that the back bonded sulfur species prefer the bridge sites because of lower steric repulsion at these sites between the gold surface and the hydrogen and methyl groups, respectively.
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Selective propene epoxidation on immobilized au(6-10) clusters: the effect of hydrogen and water on activity and selectivity.
Sungsik Lee,Luis M. Molina,María J. López,Julio A. Alonso,Bjørk Hammer,Byeongdu Lee,Sönke Seifert,Randall E. Winans,Jeffrey W. Elam,Michael J. Pellin,Stefan Vajda,Stefan Vajda +11 more
TL;DR: Subnanometer gold clusters immobilized on amorphous alumina result in a highly active and selective catalyst for propene epoxidation, with the highest selectivity for gas mixtures involving oxygen and water, thus avoiding the use of hydrogen.
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A theoretical study of CH4 dissociation on pure and gold‐alloyed Ni(111) surfaces
TL;DR: In this paper, a density functional theory study of the first step of CH4 adsorption on the Ni(111) surface, dissociation into adsorbed CH3 and H, is presented.