木质素氢解反应溶剂与催化剂研究进展

Progress in solvent and catalyst for hydrogenolysis of lignin

木质素是由三种苯丙烷单元随机键合形成的复杂大分子物质,是自然界中唯一可直接提供芳环的可再生能源。以木质素为原料制取高品位液体燃料和高附加值化学品,特别是木质素氢解是国内外关注的热门研究领域之一。梳理了近年木质素催化氢解研究进展,针对木质素氢解过程中溶剂体系(水溶剂以及醇类溶剂)和催化剂体系(均相催化剂以及非均相金属催化剂)对木质素氢解效率、产物分布的影响机理,做了较全面的概述和分析。最后,针对木质素催化氢解领域目前尚存在的问题提出建议,期望为木质素高值化利用相关研究提供参考。

Lignin is a complex macromolecule formed by three types of phenylpropane units.It is the only renewable energy source in nature that can directly provide aromatic rings.The use of lignin as a raw material for the preparation of high-grade liquid fuels and high value-added chemicals,especially lignin hydrogenolysis is one of the hot research areas at home and abroad.Hydrogenolysis is one of the most promising methods for the depolymerization of lignin.This paper comprehensively summarizes influence of the solvent systems(aqueous and alcohol)and catalyst systems(homogeneous and heterogeneous catalysts)commonly used in hydrogenolysis during recent years.Finally,several suggestions to relative research in the future are proposed.