Curtin University Homepage
  • Library
  • Help
    • Admin

    espace - Curtin’s institutional repository

    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item
    • espace Home
    • espace
    • Curtin Research Publications
    • View Item

    Effect of sulfuric acid addition on the yield and composition of lignin derived oligomers obtained by the auger and fast pyrolysis of Douglas-fir wood

    Access Status
    Fulltext not available
    Authors
    Zhou, S.
    Osman, N.
    Li, H.
    McDonald, A.
    Mourant, Daniel
    Li, Chun-Zhu
    Garcia-Perez, M.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Zhou, S. and Osman, N. and Li, H. and McDonald, A. and Mourant, D. and Li, C. and Garcia-Perez, M. 2013. Effect of sulfuric acid addition on the yield and composition of lignin derived oligomers obtained by the auger and fast pyrolysis of Douglas-fir wood. Fuel. 103: pp. 512-523.
    Source Title
    Fuel
    ISSN
    0016-2361
    School
    Department of Chemical Engineering
    URI
    http://hdl.handle.net/20.500.11937/12167
    Collection
    • Curtin Research Publications
    Abstract

    This paper investigates the effect of sulfuric acid (H2SO4) concentration, as an additive to enhance theproduction of anhydrosugars via pyrolysis of Douglas-fir, on the yield and composition of the ligninderived oligomers. Pyrolysis tests at 500 C were conducted in auger and fluidized bed reactors. For both reactors the yield of lignin derived oligomers decreased as H2SO4 was added. Several analytical techniques (UV-fluorescence, TGA, ESI-MS, FTIR, solid state 13C NMR and Pyrolysis-GC/MS) were used to characterize the lignin derived oligomers collected. Four peaks were observed in the UV-fluorescence spectra. The addition of H2SO4 reduces the yield of all the peaks. DTG curves also show the presence of several peaks. The addition of H2SO4 decreased the yield of all the peaks but its effect was more pronounced on peaks at 320 and 400 C. Electrospray ionization-mass spectrometry studies did not show any major change on the molecular weight of the lignin oligomers ionized products obtained as a function of H2SO4 concentration. Solid state NMR results indicate that the methoxyl groups decreased and the carbonyl increased gradually as sulfuric acid concentration increases. The Py-GC/MS confirmed the phenolic compounds with methoxyl substitutions were substantially reduced as the acid concentration increased. The experimental results obtained suggest the presence of H2SO4 enhances the polycondensation of methoxyl substituted aromatic rings.

    Related items

    Showing items related by title, author, creator and subject.

    • Effect of sulfuric acid on the pyrolysis of Douglas fir and hybrid poplar wood: Py-GC/MS and TG studies
      Zhou, S.; Wang, Z.; Liaw, S.; Li, Chun-Zhu; Garcia-Perez, M. (2013)
      This paper reports results on the effect of sulfuric acid addition on the pyrolysis of raw and acid washed Douglas fir wood (DFW) (a softwood) and hybrid poplar wood (HPW) (a hardwood). Nitric acid (0.1%) was used to ...
    • Characterisation of aquatic natural organic matter by micro-scale sealed vessel pyrolysis
      Berwick, Lyndon (2009)
      The analytical capacity of MSSV pyrolysis has been used to extend the structural characterisation of aquatic natural organic matter (NOM). NOM can contribute to various potable water issues and is present in high ...
    • Effect of the Fast Pyrolysis Temperature on the Primary and Secondary Products of Lignin
      Zhou, Shuai; Garcia-Perez, Manuel; Pecha, Brennan; Kersten, Sascha; McDonald, Armando; Westerhof, Roel (2013)
      This paper presents results on the primary pyrolysis products of organosolv lignin at temperatures between 360 and 700 °C. To study the primary products, a vacuum screen heater (heating rate of 8000 °C/s, deep vacuum of ...
    Advanced search

    Browse

    Communities & CollectionsIssue DateAuthorTitleSubjectDocument TypeThis CollectionIssue DateAuthorTitleSubjectDocument Type

    My Account

    Admin

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Follow Curtin

    • 
    • 
    • 
    • 
    • 

    CRICOS Provider Code: 00301JABN: 99 143 842 569TEQSA: PRV12158

    Copyright | Disclaimer | Privacy statement | Accessibility

    Curtin would like to pay respect to the Aboriginal and Torres Strait Islander members of our community by acknowledging the traditional owners of the land on which the Perth campus is located, the Whadjuk people of the Nyungar Nation; and on our Kalgoorlie campus, the Wongutha people of the North-Eastern Goldfields.