Abstract:

Lignin is the most abundant renewable aromatic resource in nature. Catalytic depolymerization of lignin into monophenols suitable for downstream processing has been regarded as a key point for its high-value utilization, playing a significant role in advancing the "dual carbon" target. However, due to the structural complexity, heterogeneity, and diversity of lignin, achieving efficient and highly selective production of separable aromatic monomers for the preparation of valuable products remains a significant challenge. This paper introduces the structural characteristics and differences of lignin from various plant sources, while also presenting the latest findings from our group on lignin reductive catalytic depolymerization and the high-value utilization of monophenols. The authors propose that lignin-derived monophenols hold promise for the preparation of bioactive molecules, functional materials, and high-energy fuels. This work provides a solid foundation and reference for the development of high-value lignin-based products.

Key words: lignin, heterogeneous catalysis, hydrogenolysis, reaction mechanism, monophenols, functional materials, bio-fuels

摘要：

木质素是自然界储量最丰富的可再生芳香族化学资源，通过催化降解制备适用于下游生产的单酚是实现其高值化的关键点，对“双碳”目标的推进具有重要意义。然而，由于木质素自身结构的复杂性、不均一性及多样性，导致其在高效、高选择性制备可分离的芳香单体并用于开发高值产品方面仍面临诸多挑战。本文介绍了不同植物中木质素的结构特性及差异性，结合本文作者课题组近期在木质素还原催化降解及其降解产物高值利用的最新研究进展，提出了木质素降解单酚适用于制备生物活性分子、功能材料及高能燃料的观点，以期为木质素催化转化及开发高附加值产品提供依据与参考。

关键词: 木质素, 多相催化, 氢解, 反应机理, 单酚化合物, 功能材料, 生物质基燃料