T
Thomas Willum Hansen
Researcher at Technical University of Denmark
Publications - 276
Citations - 11510
Thomas Willum Hansen is an academic researcher from Technical University of Denmark. The author has contributed to research in topics: Catalysis & Transmission electron microscopy. The author has an hindex of 50, co-authored 261 publications receiving 9208 citations. Previous affiliations of Thomas Willum Hansen include Gentofte Hospital & Max Planck Society.
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Sintering of Catalytic Nanoparticles: Particle Migration or Ostwald Ripening?
TL;DR: In conclusion, the recent literature, especially on in situ studies, shows that OR is the dominant process causing the growth of nanoparticle size, and this could help to develop sinter-resistant catalysts, with the ultimate goal of designing catalysts that are self-healing.
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Enabling direct H2O2 production through rational electrocatalyst design
Samira Siahrostami,Arnau Verdaguer-Casadevall,Mohammadreza Karamad,Davide Deiana,Paolo Malacrida,Björn Wickman,Björn Wickman,María Escudero-Escribano,Elisa Antares Paoli,Rasmus Frydendal,Thomas Willum Hansen,Ib Chorkendorff,Ifan E. L. Stephens,Jan Rossmeisl +13 more
TL;DR: Electrochemical measurements on Pt-Hg nanoparticles show more than an order of magnitude improvement in mass activity, that is, A g(-1) precious metal, for H2O2 production, over the best performing catalysts in the literature.
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Trends in the Electrochemical Synthesis of H2O2: Enhancing Activity and Selectivity by Electrocatalytic Site Engineering
Arnau Verdaguer-Casadevall,Davide Deiana,Mohammadreza Karamad,Samira Siahrostami,Paolo Malacrida,Thomas Willum Hansen,Jan Rossmeisl,Ib Chorkendorff,Ifan E. L. Stephens +8 more
TL;DR: Using this approach, two new catalysts for the reaction are discovered, Ag-Hg and Pd-HG, with unique electrocatalytic properties both of which exhibit performance that far exceeds the current state-of-the art.
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Atomic-Resolution in Situ Transmission Electron Microscopy of a Promoter of a Heterogeneous Catalyst
Thomas Willum Hansen,Jakob Birkedal Wagner,Poul Hansen,Søren Dahl,Haldor F A Topsoe,Claus J. H. Jacobsen +5 more
TL;DR: In the most active ruthenium catalyst for ammonia synthesis known so far, the barium promoter is shown to be located in two different phases in the catalyst, suggesting increased activity is suggested to be related to a two-dimensional barium-oxygen overlayer on the r Ruthenium crystals.
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Analysis of the structure and chemical properties of some commercial carbon nanostructures
Jean-Philippe Tessonnier,Dirk Rosenthal,Thomas Willum Hansen,Christian Hess,Manfred Erwin Schuster,Raoul Blume,Frank Girgsdies,Norbert Pfänder,Olaf Timpe,Dang Sheng Su,Robert Schlögl +10 more
TL;DR: In this paper, the authors present an extensive characterization of a representative set of commercially available carbon nanomaterials, and the observations are of importance for subsequent use in catalysis where the presence of impurities or defects in the nanostructure can dramatically modify the activity of the catalytic material.