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Effect of ion exchange by an organic cation on platinum immobilization on clays

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Abstract

Clay-supported platinum catalysts were prepared by ion exchange. The platinum precursor has been reduced either in the presence or in the absence of cinchonidinium cations introduced in the interlamellar space of the cationic clay. The samples were characterized by XRD and TEM. Reduction by NaBH4 in the absence of cinchonidinium cations and the subsequent introduction of this latter ensured the formation of monodispersed, small platinum crystallites immobilized mostly between the clay sheets. On the other hand, reduction in the presence of the organic cations resulted in migration of the platinum particles on the external surface of the clay.

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Authors and Affiliations

  1. Organic Catalysis Research Group of the Hungarian Academy of Sciences, Department of Organic Chemistry, University of Szeged, Szeged, Hungary

    György Szöllősi

  2. Department of Organic Chemistry, University of Szeged, Szeged, Hungary

    Ágnes Mastalir & Mihály Bartók

Authors
  1. György Szöllősi
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  2. Ágnes Mastalir
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  3. Mihály Bartók
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Szöllősi, G., Mastalir, Á. & Bartók, M. Effect of ion exchange by an organic cation on platinum immobilization on clays. Reaction Kinetics and Catalysis Letters 74, 241–249 (2001). https://doi.org/10.1023/A:1017928909406

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