Center for Surface Chemistry and Catalysis, KU Leuven, Celestijnenlaan 200F, 3001, Leuven, Belgium.
Top Curr Chem (Cham). 2018 Jul 4;376(4):30. doi: 10.1007/s41061-018-0207-2.
Lignin valorization has gained increasing attention over the past decade. Being the world's largest source of renewable aromatics, its valorization could pave the way towards more profitable and more sustainable lignocellulose biorefineries. Many lignin valorization strategies focus on the disassembly of lignin into aromatic monomers, which can serve as platform molecules for the chemical industry. Within this framework, the oxidative conversion of lignin is of great interest because it enables the formation of highly functionalized, valuable compounds. This work provides a brief overview and critical discussion of lignin oxidation research. In the first part, oxidative conversion of lignin models and isolated lignin streams is reviewed. The second part highlights a number of challenges with respect to the substrate, catalyst, and operating conditions, and proposes some future directions regarding the oxidative conversion of lignin.
在过去的十年中，木质素的增值利用受到了越来越多的关注。木质素作为世界上最大的可再生芳烃资源，其增值利用可以为更有利可图和更可持续的木质纤维素生物炼制铺平道路。许多木质素增值利用策略都集中在将木质素分解为芳香族单体上，这些单体可以作为化学工业的平台分子。在这个框架内，木质素的氧化转化具有很大的吸引力，因为它可以形成高度功能化的、有价值的化合物。本文简要综述并批判性讨论了木质素氧化研究。第一部分综述了木质素模型和分离木质素流的氧化转化。第二部分重点讨论了关于底物、催化剂和操作条件的一些挑战，并就木质素的氧化转化提出了一些未来的方向。
