Lignin Hydrogenolysis: Phenolic Monomers from Lignin and Associated Phenolates across Plant Clades
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Chen, Mingjie↗
Engineering topics
Li, Yanding
Publications and source records attributed to Li, Yanding.
Energy-resolved mass spectrometry as a tool for identification of lignin depolymerization products
Lignin is the largest source of bio-based aromatic compounds in nature, and its valorization is essential to the sustainability of lignocellulosic biorefining. Characterizing lignin-derived compounds remains challenging due to the heterogeneity of this biopolymer. Tandem mass spectrometry is a promising tool for lignin structural analytics, as fragmentation patterns of model compounds can be extrapolated to identify characteristic moieties in complex samples. This work extends previous resonance excitation type collision-induced dissociation (CID) methods that identified lignin oligomers containing β-Ο-4, β-5, and β-β bonds, to also identify characteristics of 5-5, β-1, and 4-Ο-5 dimers, enabled by quadrupole time-of-flight (QTOF) CID with energy-resolved mass spectrometry (ERMS). Overall, beam type ERMS offers in-depth structural information and could ultimately contribute to tools for high-throughput lignin dimer identification.
09 BIOMASS FUELS↗
Continuous hydrodeoxygenation of lignin to jet-range aromatic hydrocarbons
Sustainable aviation fuel (SAF) is essential to decrease the carbon footprint of the aviation industry. Although many strategies have been developed to provide the branched, aliphatic components of SAF, few viable strategies have been demonstrated to supply the aromatic and cycloalkane fraction of SAF at the necessary scale from bio-based feedstocks. Lignin is the largest natural source of renewable aromatic compounds, yet major challenges in deoxygenation have prevented its use as a feedstock for SAF. Here we report a continuous, two-stage catalytic process using molybdenum carbide to deoxygenate lignin from poplar into aromatic hydrocarbons with 87.5% selectivity towards aromatic hydrocarbons at 86% of the theoretical carbon recovery. This work demonstrates an effective approach to convert lignin into aromatic SAF blendstocks.
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
Integrating lignin depolymerization with microbial funneling processes using agronomically relevant feedstocks
This work shows the integration of reductive lignin depolymerization and microbial funneling with Novosphingobium aromaticivorans to produce 2-pyrone-4,6-dicarboxylic acid (PDC) in a lignocellulosic biorefinery.
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗