A mild approach for bio-oil stabilization and upgrading: Electrocatalytic hydrogenation using ruthenium supported on activated carbon cloth

Zhenglong Li, Shantanu Kelkar, Lauren Raycraft, Mahlet Garedew, James E. Jackson, Dennis J. Miller, Christopher M. Saffron

    Research output: Research - peer-reviewArticle

    • 17 Citations

    Abstract

    Electrocatalytic hydrogenation (ECH) offers a new approach for bio-oil stabilization (a.k.a. partial upgrading). Water-soluble bio-oil, obtained by aqueous extraction of the liquid product of biomass pyrolysis, was hydrogenated using ECH at room conditions. A new electrocatalyst, ruthenium supported on activated carbon cloth, was used as the catalytic cathode. After electrocatalytic hydrogenation, aldehydes and ketones were reduced to the corresponding alcohols or diols, forms less prone to condensation chemistry. Carbon recovery into the liquid product, important when making liquid fuels from biomass, was more than 80%, while less than 0.1 wt% of the water-soluble bio-oil formed solid precipitate. The stability of the ECH-treated water-soluble bio-oil was checked via an accelerated aging test followed by size exclusion chromatography analysis and viscometry. Besides stabilization of bio-oil for subsequent fuel production, hydrogen and valuable diols were produced during ECH. Strategies to optimize the energy efficiency of this approach by altering the cell design, modifying the catalyst and adjusting the reaction conditions were also explored.

    LanguageEnglish (US)
    Pages844-852
    Number of pages9
    JournalGreen Chemistry
    Volume16
    Issue number2
    DOIs
    StatePublished - Feb 2014

    Profile

    Ruthenium
    Activated carbon
    Hydrogenation
    Oils
    Stabilization
    ruthenium
    activated carbon
    stabilization
    oil
    Water
    liquid
    water
    Biomass
    Liquids
    biomass
    product
    Size exclusion chromatography
    Electrocatalysts
    Viscosity measurement
    Liquid fuels

    ASJC Scopus subject areas

    • Environmental Chemistry
    • Pollution

    Cite this

    A mild approach for bio-oil stabilization and upgrading : Electrocatalytic hydrogenation using ruthenium supported on activated carbon cloth. / Li, Zhenglong; Kelkar, Shantanu; Raycraft, Lauren; Garedew, Mahlet; Jackson, James E.; Miller, Dennis J.; Saffron, Christopher M.

    In: Green Chemistry, Vol. 16, No. 2, 02.2014, p. 844-852.

    Research output: Research - peer-reviewArticle

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