当前位置: X-MOL 学术Prog. Energy Combust. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Lignin-derived platform molecules through TEMPO catalytic oxidation strategies
Progress in Energy and Combustion Science ( IF 29.5 ) Pub Date : 2019-05-01 , DOI: 10.1016/j.pecs.2019.01.002
Samira Gharehkhani , Yiqian Zhang , Pedram Fatehi

Abstract Lignin is currently an under-used material of the pulping and cellulosic ethanol production plants. The first and foremost objective in dealing with lignin is to augment the use of this aromatic compound and financial profitability of lignin-based processes. Of particular interests are lignin oxidation and depolymerization methods that harvest either the aromatic subunits of polymers or monomeric/oligomeric aromatic products used as platform chemicals. In this context, many studies have focused on the catalytic processes in which a nitroxyl catalyst, 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO), was employed to oxidize hydroxyl groups in lignin structure and selectively depolymerize lignin via cleavage of the ether and C C bonds. In discussing the advanced studies especially over the last decade on the oxidation of lignin models with TEMPO catalyst systems, this review provides a description of promising methods that can be employed for authentic lignin conversion. In the present review, a particular emphasis is dedicated to the proposed mechanisms for the oxidation of lignin and lignin models.

中文翻译:

通过 TEMPO 催化氧化策略的木质素衍生平台分子

摘要 木质素目前是制浆和纤维素乙醇生产厂未充分利用的材料。处理木质素的首要目标是增加这种芳香族化合物的使用和基于木质素的工艺的财务盈利能力。特别令人感兴趣的是木质素氧化和解聚方法,这些方法收集聚合物的芳香亚基或用作平台化学品的单体/低聚芳香产物。在这方面,许多研究都集中在催化过程中,其中使用硝酰基催化剂 2,2,6,6-四甲基哌啶-1-氧基(TEMPO)氧化木质素结构中的羟基并通过裂解选择性解聚木质素的以太和 CC 债券。在讨论特别是在过去十年中使用 TEMPO 催化剂系统氧化木质素模型的高级研究时,本综述提供了可用于真正木质素转化的有前途的方法的描述。在本综述中,特别强调了所提出的木质素氧化机制和木质素模型。
更新日期:2019-05-01
down
wechat
bug