优化木质素在单相二元溶剂体系中的氧化解聚

IF 6.2 2区 化学 Q1 CHEMISTRY, ANALYTICAL
Fanshun Meng , Shumin Wang , Suyuan Jia , Xiangyu Li , Junyou Shi , Wenbiao Xu
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引用次数: 0

摘要

木质素是木质纤维素生物质的主要成分,是一种很有前途的可再生芳香化学品生产资源。然而,其顽固性结构和化学复杂性对高效催化增值提出了重大挑战。传统氧化解聚体系单体产率低、再聚合频繁,进一步限制了其实际应用。本研究旨在通过使用二元溶剂体系来提高木质素解聚效率。考察了甲醇/水和甲醇/甲酸两种溶剂体系对产物收率和选择性的影响。在优化条件下,甲醇/甲酸体系的单体得率显著高于甲醇/水体系(21.99 wt%)。在该体系中,水有助于稳定热环境,而甲酸既是溶剂又是给氢体,有利于键的裂解,提高了选择性。这些结果强调了溶剂组成和反应条件在实现高价值化工生产中高效木质素增值的重要性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optimizing lignin oxidative depolymerization in single-phase binary solvent systems
Lignin, a major component of lignocellulosic biomass, represents a promising renewable resource for the production of aromatic chemicals. However, its recalcitrant structure and chemical complexity pose significant challenges for efficient catalytic valorization. The low monomer yields and frequent repolymerization in conventional oxidative depolymerization systems further limit practical applications. This study aims to enhance lignin depolymerization efficiency through the use of binary solvent systems. Two solvent systems—methanol/water and methanol/formic acid—were evaluated for their effects on product yield and selectivity. Under optimized conditions, the methanol/formic acid system afforded a significantly higher monomer yield (21.99 wt%) compared to methanol/water. In this system, water helped stabilize the thermal environment, while formic acid acted both as solvent and hydrogen donor, facilitating bond cleavage and improving selectivity. These results underscore the importance of solvent composition and reaction conditions in achieving efficient lignin valorization for high-value chemical production.
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来源期刊
CiteScore
9.10
自引率
11.70%
发文量
340
审稿时长
44 days
期刊介绍: The Journal of Analytical and Applied Pyrolysis (JAAP) is devoted to the publication of papers dealing with innovative applications of pyrolysis processes, the characterization of products related to pyrolysis reactions, and investigations of reaction mechanism. To be considered by JAAP, a manuscript should present significant progress in these topics. The novelty must be satisfactorily argued in the cover letter. A manuscript with a cover letter to the editor not addressing the novelty is likely to be rejected without review.
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