Get access

The Origin of Molecular Mobility During Biomass Pyrolysis as Revealed by In situ 1H NMR Spectroscopy

Authors

  • Dr. Anthony Dufour,

    Corresponding author
    1. Reactions and Processes Engineering Laboratory, CNRS, Nancy Université, ENSIC, 1 rue Grandville, B.P.20451, 54000 Nancy Cedex (France)
    • Reactions and Processes Engineering Laboratory, CNRS, Nancy Université, ENSIC, 1 rue Grandville, B.P.20451, 54000 Nancy Cedex (France)
    Search for more papers by this author
  • Dr. Miguel Castro-Diaz,

    1. Nottingham Fuel and Energy Centre, Dept. of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD (United Kingdom)
    Search for more papers by this author
  • Prof. Nicolas Brosse,

    1. LERMAB, Nancy-Université, B.P.239, 54506 Vandoeuvre les Nancy Cedex (France)
    Search for more papers by this author
  • Dr. Mohamed Bouroukba,

    1. Reactions and Processes Engineering Laboratory, CNRS, Nancy Université, ENSIC, 1 rue Grandville, B.P.20451, 54000 Nancy Cedex (France)
    Search for more papers by this author
  • Prof. Colin Snape

    Corresponding author
    1. Nottingham Fuel and Energy Centre, Dept. of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD (United Kingdom)
    • Nottingham Fuel and Energy Centre, Dept. of Chemical and Environmental Engineering, University of Nottingham, Nottingham NG7 2RD (United Kingdom)
    Search for more papers by this author

Abstract

The thermochemical conversion of lignocellulosic biomass feedstocks offers an important potential route for the production of biofuels and value-added green chemicals. Pyrolysis is the first phenomenon involved in all biomass thermochemical processes and it controls to a major extent the product composition. The composition of pyrolysis products can be affected markedly by the extent of softening that occurs. In spite of extensive work on biomass pyrolysis, the development of fluidity during the pyrolysis of biomass has not been quantified. This paper provides the first experimental investigation of proton mobility during biomass pyrolysis by in situ 1H NMR spectroscopy. The origin of mobility is discussed for cellulose, lignin and xylan. The effect of minerals on cellulose mobility is also investigated. Interactions between polymers in the native biomass network are revealed by in situ 1H NMR analysis.

Ancillary