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New palladium nanoclusters. Synthesis, structure, and catalytic properties

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Abstract

The reduction of palladium(ii) carboxylates Pd3(OCOR)6 (R = Me, Et, CHMe2, CMe3) with hydrogen in alcohol solutions containing 1,10-phenanthroline (phen) and subsequent oxidation with oxygen gave new palladium nanoclusters, mainly particles with a nearly spherical metal core and an average size of 18 Å. Based on elemental analysis, NMR, X-ray photoelectron spectroscopy, and EXAFS, nanoclusters were described by the idealized formula Pd147phen32O60(OCOR)30. The specimens contained up to ∼25% smaller 55-atomic Pd clusters with a ∼10 Å metal core. New nanoclusters catalyze hydrogenation of alkynes and alkenes, reduction of nitriles with formic acid, oxidation of aliphatic and benzylic alcohols, oxidative esterification of ethylene and propylene, and disproportionation of benzyl alcohol into toluene and benzaldehyde.

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Authors and Affiliations

  1. N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 31 Leninsky prosp., 119991 Moscow, Russian Federation, Russia

    I. P. Stolyarov, Yu. V. Gaugash, M. N. Vargaftik & I. I. Moiseev

  2. G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 5 prosp. Akad. Lavrent"eva, 630090 Novosibirsk, Russian Federation, Russia

    G. N. Kryukova & D. I. Kochubei

Authors
  1. I. P. Stolyarov
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  2. Yu. V. Gaugash
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  3. G. N. Kryukova
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  4. D. I. Kochubei
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  5. M. N. Vargaftik
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  6. I. I. Moiseev
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Stolyarov, I.P., Gaugash, Y.V., Kryukova, G.N. et al. New palladium nanoclusters. Synthesis, structure, and catalytic properties. Russian Chemical Bulletin 53, 1194–1199 (2004). https://doi.org/10.1023/B:RUCB.0000042273.76439.7b

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  • DOI: https://doi.org/10.1023/B:RUCB.0000042273.76439.7b

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