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The state of metals in the supported bimetallic Pt−Pd/SO4/ZrO2 system

  • Physical Chemistry
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Abstract

The behavior of the metals in the Pt−Pd/ZrO2 and Pt−Pd/SO4/ZrO2 systems was studied by DRIFT spectroscopy. After reduction of Pt−Pd/ZrO2 at 100 °C, the states of the metals are mainly Pt0 and Pd0 with a minor admixture of positively charged forms of Pt+ or Pd2+. An increase in the temperature of reduction leads to the formation of a bimetallic alloy. In the Pt−Pd/SO4/ZrO2 system, the effects of alloy formation and the interaction of the surface SO4 groups superimpose. At low reduction temperatures, the surface SO4 groups interact mainly with palladium. The influence of the surface sites on both supported metals increases with increasing reduction temperature.

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Authors and Affiliations

  1. N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky prosp., 117913, Moscow, Russian Federation

    A. V. Ivanov, A. Yu. Stakheev & L. M. Kustov

Authors
  1. A. V. Ivanov
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  2. A. Yu. Stakheev
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  3. L. M. Kustov
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Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1265–1270, July, 1999.

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Ivanov, A.V., Stakheev, A.Y. & Kustov, L.M. The state of metals in the supported bimetallic Pt−Pd/SO4/ZrO2 system. Russ Chem Bull 48, 1255–1260 (1999). https://doi.org/10.1007/BF02495285

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  • DOI: https://doi.org/10.1007/BF02495285

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