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Impact of Organic Ligands on the Structure and Hydrogenation Performance of Colloidally Prepared Bimetallic PtSn Nanoparticles

Authors

  • Lena Altmann,

    Corresponding author
    1. Institute of Applied and Physical Chemistry, University of Bremen, Leobener Str. NW 2, 28359 Bremen (Germany), Fax: (+49) 421-21863188
    • Institute of Applied and Physical Chemistry, University of Bremen, Leobener Str. NW 2, 28359 Bremen (Germany), Fax: (+49) 421-21863188

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  • Dr. Xiaodong Wang,

    1. Energy and Semiconductor Research Laboratory, Department of Physics, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg (Germany)
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  • Jörg Stöver,

    1. Institute of Pure and Applied Chemistry, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg (Germany)
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  • Miriam Klink,

    1. Institute of Applied and Physical Chemistry, University of Bremen, Leobener Str. NW 2, 28359 Bremen (Germany), Fax: (+49) 421-21863188
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  • Dr. Volkmar Zielasek,

    1. Institute of Applied and Physical Chemistry, University of Bremen, Leobener Str. NW 2, 28359 Bremen (Germany), Fax: (+49) 421-21863188
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  • Dr. Karsten Thiel,

    1. Fraunhofer Institute for Manufacturing Technology and Applied Materials (IFAM), Wiener Str. 12, 28359 Bremen (Germany)
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  • Prof. Dr. Joanna Kolny-Olesiak,

    1. Energy and Semiconductor Research Laboratory, Department of Physics, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg (Germany)
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  • Prof. Dr. Katharina Al-Shamery,

    1. Institute of Pure and Applied Chemistry, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg (Germany)
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  • Dr. Holger Borchert,

    1. Energy and Semiconductor Research Laboratory, Department of Physics, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg (Germany)
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  • Prof. Dr. Jürgen Parisi,

    1. Energy and Semiconductor Research Laboratory, Department of Physics, University of Oldenburg, Carl-von-Ossietzky-Str. 9-11, 26129 Oldenburg (Germany)
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  • Prof. Dr. Marcus Bäumer

    Corresponding author
    1. Institute of Applied and Physical Chemistry, University of Bremen, Leobener Str. NW 2, 28359 Bremen (Germany), Fax: (+49) 421-21863188
    • Institute of Applied and Physical Chemistry, University of Bremen, Leobener Str. NW 2, 28359 Bremen (Germany), Fax: (+49) 421-21863188

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Abstract

The catalytic performance of ligand-capped monometallic Pt and bimetallic PtSn nanoparticles supported on SiO2 toward the selective hydrogenation of acetylene to ethylene in ethylene-rich streams was investigated. To evaluate the effect of organic ligands on the hydrogenation performance, dodecylamine (DDA)-capped monometallic and bimetallic nanoparticles were compared with ligand-free nanoparticles. Both ligands and Sn promote the selectivity of the catalysts. The most selective catalyst was found to be the DDA-capped PtSn catalyst, with a nominal metal atom ratio of 1:1. An increase in Pt content resulted in a decrease in the selectivity, whereas an increase in Sn content caused a decrease in the activity.

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