Journal article
Role of peracetic acid on the disruption of lignin packing structure and its consequence on lignin depolymerisation
Green chemistry : an international journal and green chemistry resource : GC, Vol.23(21), pp.8468-8479
11/01/2021
Handle:
https://hdl.handle.net/2376/120399
Appears in Aviation Sustainability Center (ASCENT)
Abstract
Peracetic acid (PAA) is an effective oxidant capable of solubilising lignin and efficiently depolymerising it to selective phenolic compounds; however, the specific role by which PAA initiates the depolymerisation is still elusive. Herein, interaction between PAA and the lignin macromolecule and the consequent structural changes of the latter were studied by characterising the lignin packing structure and its associated changes during the oxidation process. While the lignin packing structure and its changes associated with the PAA-mediated oxidation were probed by X-ray diffraction, the impact of the PAA on different chemical functionalities present in the lignin structure was established by 13C and 1H–13C heteronuclear single-quantum coherence nuclear magnetic resonance (NMR) spectroscopy. Combining the NMR spectroscopy results, and the product distribution, we conclude that the predominant reaction pathway for the oxidative depolymerisation of lignin with PAA is the Baeyer–Villiger oxidation of the ketone formed by the oxidation of the benzylic hydroxyl group adjacent to the β-O-4 linkage. The experimental evidence provided herein corroborated that PAA instigates oxygen insertion to the lignin macromolecule resulting in disruption of its packing structures and facilitates depolymerisation. We also investigated various metal oxide and mixed metal oxide catalysts to identify effective catalysts that further enhance the efficiency of PAA-mediated depolymerisation of lignin and produce selective monomeric phenolic compounds. Techno-economic analysis was also conducted to identify the key parameters associated with this oxidative process that need to be considered for possible commercial application.
Metrics
14 Record Views
Details
- Title
- Role of peracetic acid on the disruption of lignin packing structure and its consequence on lignin depolymerisation
- Creators
- Ruoshui Ma - Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354, USAUdishnu Sanyal - Washington State University, WSU Tri-CitiesMariefel V Olarte - Washington State University, Department of Biological Systems EngineeringHeather M Job - Pacific Northwest National LaboratoryMarie S Swita - Energy and Environment Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354, USASusanne B Jones - Pacific Northwest National LaboratoryPimphan A Meyer - Pacific Northwest National LaboratorySarah D Burton - Pacific Northwest National LaboratoryJohn R Cort - Washington State University, Institute of Biological ChemistryMark E Bowden - Earth and Biological Sciences Directorate, Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354, USAXiaowen Chen - National Bioenergy Centre, National Renewable Energy Lab, Golden, CO 80127, USAMichael P Wolcott - Washington State University, Office of Clean TechnologyXiao Zhang - Washington State University, School of Chemical Engineering and Bioengineering
- Publication Details
- Green chemistry : an international journal and green chemistry resource : GC, Vol.23(21), pp.8468-8479
- Academic Unit
- Aviation Sustainability Center (ASCENT); Alternative Jet Fuel
- Grants
- 13-C-AFJE-WaSU-06, 10, 13, 16, Federal Aviation Administration (United States, Washington) - FAA
- Identifiers
- 99900620467501842
- Language
- English
- Resource Type
- Journal article