木质素催化解聚与氢解

Catalytic Depolymerization and Hydrogenolysis of Lignin

木质素是自然界中唯一可直接提供芳环的可再生能源。木质素催化转化制备单酚及烃类等其他重要化学品是其高效综合利用的重要手段。本文对木质素的基本结构和主要利用方式进行论述,并对其催化热解聚和氢解过程的最新研究进展进行了详细探讨,对木质素主要化学键——β-O-4键的断裂机理进行了简述。在此基础上,总结了当前木质素解聚和氢解过程中的难题,并对未来的技术发展进行了展望。

Lignin is the unique, renewable and natural aromatic polymer. The efficient transformation of lignin into phenolic monomers and other high value-added chemicals such as hydrocarbons has long been regarded as an important comprehensive utilization approach. In this paper, we focused on the basic structure and the main treatment technologies of this aromatic material. The recent progress in the catalytic thermal depolymerization and hydrogenolysis were reviewed intensively. The catalytic mechanism for the degradation of lignin characteristic chemical bond β-O-4 was also given. Furthermore, the current technique challenges were summarized. Moreover, future technologic explorations for the efficient application of lignin were proposed.