The present contribution emphasizes the formation of oligomeric products in various depolymerization approaches of lignin,namely reductive catalytic fractionation,oxidative catalytic fractionation,and pyrolysis.Three ...The present contribution emphasizes the formation of oligomeric products in various depolymerization approaches of lignin,namely reductive catalytic fractionation,oxidative catalytic fractionation,and pyrolysis.Three possible routes to form such oligomers in these depolymerization processes are summarized and compared from various studies conducted on model compounds.Next,the main identification techniques for characterizing oligomeric products are highlighted.Particular focus is given to 2D-HSQC-NMR,GPC,Maldi-TOF-MS and FT-ICR-MS,which represent the state-of-art characterization of lignin.Special attention was paid to the transferability of these techniques for depolymerized oligomeric lignin.Finally,both the existing and expected potential lignin valorization routes are discussed for these oligomers,and technical hurdles and recommendations are provided in an attempt to catalyze the development of new discoveries and enabling technologies.展开更多
基金financial contribution from Sandia National Laboratories,which is a multi-mission laboratory managed and operated by National Technology&Engineering Solutions of Sandia,LLC,a wholly owned subsidiary of Honeywell International Inc.,for the U.S.Department of Energy's National Nuclear Security Administration under contract DE-NA0003525.
文摘The present contribution emphasizes the formation of oligomeric products in various depolymerization approaches of lignin,namely reductive catalytic fractionation,oxidative catalytic fractionation,and pyrolysis.Three possible routes to form such oligomers in these depolymerization processes are summarized and compared from various studies conducted on model compounds.Next,the main identification techniques for characterizing oligomeric products are highlighted.Particular focus is given to 2D-HSQC-NMR,GPC,Maldi-TOF-MS and FT-ICR-MS,which represent the state-of-art characterization of lignin.Special attention was paid to the transferability of these techniques for depolymerized oligomeric lignin.Finally,both the existing and expected potential lignin valorization routes are discussed for these oligomers,and technical hurdles and recommendations are provided in an attempt to catalyze the development of new discoveries and enabling technologies.
