Oxidative dehydrogenation of a biomass derived lignan - Hydroxymatairesinol over heterogeneous gold catalysts

Olga A. Simakova, Elena V. Murzina, Päivi Mäki-Arvela, Anne Riikka Leino, Betiana C. Campo, Krisztián Kordás, Stefan M. Willför, Tapio Salmi, Dmitry Yu Murzin*

*Korresponderande författare för detta arbete

    Forskningsoutput: TidskriftsbidragArtikelVetenskapligPeer review

    26 Citeringar (Scopus)

    Sammanfattning

    Synthesis of the lignan oxomatairesinol via oxidative dehydrogenation of the naturally occurring lignan hydroxymatairesinol was studied over gold catalysts supported on C, TiO2, SiO2, Al2O 3, and MgO. In order to investigate the reaction performance over the gold catalyst, synthesis of lignan oxomatairesinol was carried out in different organic solvents/water mixtures under synthetic air and nitrogen atmosphere at 373 K, and using also isolated hydroxymatairesinol isomers as a starting material. The results were compared with those obtained over palladium catalysts. Synthesized supported gold catalysts as well as the corresponding supports were characterized by TEM, XRD, ICP-OES, CO2-TPD, FTIR (using pyridine as a probe molecule), and XPS. Gold catalysts were shown to display superior performance compared with palladium ones: the activity was 4 times higher, with selectivity toward oxomatairesinol being 100%, while 60-85% were obtained over palladium catalysts. In contrast to palladium, the activity of gold catalysts is high in aerobic conditions and water-propan-2-ol mixture. However, activity and selectivity of gold catalysts were shown to be dependent on the electronic state of the metal and, similar to palladium catalysts, on the support acidity.

    OriginalspråkEngelska
    Sidor (från-till)54-64
    Antal sidor11
    TidskriftJournal of Catalysis
    Volym282
    Utgåva1
    DOI
    StatusPublicerad - 15 aug 2011
    MoE-publikationstypA1 Tidskriftsartikel-refererad

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