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Hydrodechlorination of CCl4 on Pt–Au/Al2O3 Catalysts

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Abstract

A series of Pt/Al2O3 catalysts were prepared by the impregnation method and were characterized by TEM, XRD, H2 and CO chemisorptions, and investigated in the hydrodechlorination of tetrachloromethane. Three Pt-rich, Pt–Au/Al2O3 catalysts (Pt100, Pt95Au5 and Pt90Au10) showed a similar metal particle size (~2.5–2.7 nm), so observed changes in the catalytic behavior are ascribed to alloying effect, especially because a considerable degree of Pt–Au mixing was achieved in the bimetallic samples. It appeared that by introducing very small amount of gold (10 at.%) to platinum, the catalytic activity is increased. It is argued that the occurrence of this moderate synergistic effect is associated with a decreased tendency of surface chloriding when platinum is alloyed with gold.

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Acknowledgements

This work was supported by the Polish Ministry of Science and Higher Education within Research Project PBZ-KBN-116/T09/2004, and, in part, by the Polish EKOKAT network.

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Authors and Affiliations

  1. Institute of Physical Chemistry, PAS, Kasprzaka 44/52, 01224, Warszawa, Poland

    Marta Legawiec-Jarzyna, Wojciech Juszczyk, Magdalena Bonarowska, Zbigniew Kaszkur & Zbigniew Karpiński

  2. Institute of Low Temperature and Structure Research, PAS, Okólna 2, 50422, Wrocław, Poland

    Leszek Kępiński

  3. Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00664, Warszawa, Poland

    Zbigniew Kowalczyk

Authors
  1. Marta Legawiec-Jarzyna
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  2. Wojciech Juszczyk
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  3. Magdalena Bonarowska
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  4. Zbigniew Kaszkur
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  5. Leszek Kępiński
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  6. Zbigniew Kowalczyk
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  7. Zbigniew Karpiński
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Correspondence to Zbigniew Karpiński.

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Zbigniew Kowalczyk—deceased.

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Legawiec-Jarzyna, M., Juszczyk, W., Bonarowska, M. et al. Hydrodechlorination of CCl4 on Pt–Au/Al2O3 Catalysts. Top Catal 52, 1037–1043 (2009). https://doi.org/10.1007/s11244-009-9258-5

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  • DOI: https://doi.org/10.1007/s11244-009-9258-5

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