Palladium catalysts supported on N-functionalized hollow vapor-grown carbon nanofibers: The effect of the basic support and catalyst reduction temperature

Serap Sahin, Päivi Mäki-Arvela, Jean-Philippe Tessonnier, Alberto Villa, Sylvia Reiche, Sabine Wrabetz, Dangsheng Su, Robert Schlögl, Tapio Salmi, Dmitry Yu Murzin*

*Korresponderande författare för detta arbete

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    11 Citeringar (Scopus)

    Sammanfattning

    The basic N-functionalized vapor-grown carbon nanofibers (N-VGCF) were synthesized by post-treating oxidized VGCFs in gaseous NH3 at high temperature (ammonolysis) prior to Pd addition by sol immobilization. The catalysts were characterized by nitrogen adsorption, hydrogen temperature programmed desorption, adsorption microcalorimetry and by SEM and TEM. Catalytic activity was evaluated in a model reaction, synthesis of (R)-1-phenylethyl acetate starting from hydrogenation of acetophenone to racemic 1-phenylethanol over Pd supported on N-VGCFs, at 70 °C under atmospheric hydrogen pressure in toluene, followed by acylation over an immobilized lipase in the same reaction pot. The main parameters investigated in this work were the role of the basic N-VGCF supports as well as the reduction procedure of the supported Pd catalysts (Pd-N-VGCF). The results revealed that the catalytic activity of the Pd-N-VGCF catalysts was highly dependent on the reduction procedure. The highest desired product yield, 35%, was obtained over a Pd-N-VGCF catalyst when the support was treated at 400 °C with gaseous ammonia prior to Pd addition.

    OriginalspråkEngelska
    Sidor (från-till)137-147
    Antal sidor11
    TidskriftApplied Catalysis A: General
    Volym408
    Utgåva1-2
    DOI
    StatusPublicerad - 28 nov 2011
    MoE-publikationstypA1 Tidskriftsartikel-refererad

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