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Keywords:

  • biofuels;
  • NMR spectroscopy;
  • pyrolysis;
  • reaction mechanisms;
  • renewable resources
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Coming of age: A method for investigating the accelerated aging of biomass pyrolysis oils is reported. The in situ NMR investigation, done by using quantitative 1H, 13C NMR and heteronuclear single-quantum correlation (HSQC)-NMR techniques, reveals the chemical structural changes of pyrolysis oil during the aging process, providing insight into the mechanism of aging process.