Preparation and Catalysis of Poly (.BETA.-cyclodextrin)-Stabilized Palladium Nanoparticles

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  • SHIRAISHI Yukihide
    Department of Materials Science and Environmental Engineering, Tokyo University of Science, Yamaguchi Advanced Materials Institute, Tokyo University of Science, Yamaguchi
  • HAYASHI Miho
    Department of Materials Science and Environmental Engineering, Tokyo University of Science, Yamaguchi
  • TOSHIMA Naoki
    Department of Materials Science and Environmental Engineering, Tokyo University of Science, Yamaguchi Advanced Materials Institute, Tokyo University of Science, Yamaguchi

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  • シクロデキストリンポリマー保護パラジウム・ナノ粒子の創製と選択的水素化触媒機能
  • シクロデキストリン ポリマー ホゴ パラジウム ナノ リュウシ ノ ソウセイ ト センタクテキ スイソカ ショクバイ キノウ

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Abstract

Interests in colloidal dispersions of nanoscopic materials and their application to catalyses have greatly stimulated research on metal nanoparticles. Stabilizers, often used to prevent metal nanoparticles from aggregation, can also promote some special properties of metal nanoparticles. Cyclodextrins (CyD) are known to form inclusion complexes with organic compounds in solution. Palladium nanoparticles can be well stabilized not by CyD, but by poly(β-cyclodextrin) (PCyD). PCyD-stabilized Pd nanoparticles, prepared by refluxing an alcohol/water solution of palladium acetate in the presence of PCyD, act as highly active catalysts for hydrogenation of olefins. The catalytic activity for 10-undecenoic acid was higher than that for 2-undecenoic acid, suggesting a steric effect on the catalytic activity due to inclusion complex formation of Pd nanoparticle-containing PCyD with the substrates. A similar effect was observed for 4- and 3-vinylbenzoic acids.<br>

Journal

  • KOBUNSHI RONBUNSHU

    KOBUNSHI RONBUNSHU 64 (1), 74-76, 2007

    The Society of Polymer Science, Japan

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