Unravelling the enigma of ligninOX: can the oxidation of lignin be controlled?†,Chemical Science

当前位置： X-MOL 学术 › Chem. 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.)

Unravelling the enigma of ligninOX: can the oxidation of lignin be controlled?†
Chemical Science ( IF 7.6 ) Pub Date : 2017-11-09 00:00:00 , DOI: 10.1039/c7sc03520a
Haiwei Guo _{1,

2,

3} , Daniel M Miles-Barrett ₁ , Andrew R Neal ₁ , Tao Zhang ₂ , Changzhi Li ₂ , Nicholas J Westwood ₁

Affiliation

As societal challenges go, the development of efficient biorefineries as a means of reducing our dependence on petroleum refineries is high on the list. One of the core strengths of the petroleum refinery is its ability to produce a huge range of different products using all of the components of the starting material. In contrast, the target of using all the biopolymers present in lignocellulosic biomass is far from realised. Even though our ability to use the carbohydrate-based components has advanced, our plans for lignin lag behind (with the notable exception of vanillin production). One approach to lignin usage is its controlled depolymerisation. This study focuses on an increasingly popular approach to this challenge which involves highly selective lignin oxidation to give a material often referred to as lignin^OX. But what do we mean by lignin^OX? In this study we show that it is possible to form many different types of lignin^OX depending on the oxidation conditions that are used. We show that variations in the levels of processing of the β–O-4, the β–β and a third linkage occur. Through use of this information, we can form a well-defined lignin^OX from six different hardwood lignins. This process is reproducible and can be carried out on a large scale. With a source of well-defined lignin^OX in hand, we show that it can be converted to simple aromatic monomers and that any remaining lignin^OX is sufficiently soluble for further processing to be carried out.

中文翻译：

解开木质素OX之谜：木质素的氧化可以控制吗？†

随着社会挑战的不断发展，开发高效的生物炼制厂作为减少我们对炼油厂依赖的一种手段是重中之重。炼油厂的核心优势之一是能够使用原材料的所有成分生产各种不同的产品。相比之下，使用木质纤维素生物质中存在的所有生物聚合物的目标还远未实现。尽管我们使用碳水化合物成分的能力有所提高，但我们的木质素计划仍然落后（香草醛生产除外）。木质素使用的一种方法是控制其解聚。这项研究的重点是应对这一挑战的一种日益流行的方法，该方法涉及高选择性木质素氧化，以产生通常被称为木质素^{OX 的}材料。但木质素^OX是什么意思呢？在这项研究中，我们表明，根据所使用的氧化条件，可以形成许多不同类型的木质素^OX 。我们表明，β-O-4、β-β 和第三个连接的加工水平发生了变化。通过使用这些信息，我们可以从六种不同的硬木木质素中形成明确的木质素^OX 。这个过程是可重复的并且可以大规模地进行。有了明确的木质素^OX来源，我们证明它可以转化为简单的芳香族单体，并且任何剩余的木质素^OX都足够可溶，可以进行进一步加工。

更新日期：2017-11-09

点击分享查看原文

点击收藏

公开下载

阅读更多本刊最新论文本刊介绍/投稿指南11