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Recent Developments in Electrochemical Lignin Depolymerization Using Flow Systems: A Mini Review

delete2026-10-02
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Lukas Lentz
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Jens Tübke
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Robin Kunkel *
DOI:10.1002/celc.70283delete
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摘要

摘要

En 中文
木质素是第二丰富的高分子聚合物,尽管年产量达5000万吨,但利用仍严重不足。电化学流动解聚结合高效氢能生产与选择性木质素升级,为解锁这一可再生芳香原料提供了有前景的途径。本综述首次系统分析了基于流动阳极的木质素解聚研究,将其分为三个战略目标:(1) 氧析出反应(OER)替代,实现电池电压降低0.2–0.45 V和能量节省20%–40%,(2) 非选择性断裂产生分子量减少高达87%的寡聚中间体,(3) 选择性单体生产达8 wt%。限制工业化转化的关键缺陷包括木质素表征不完整、反应器描述异质性、缺乏标准化分析以及半批量操作多于连续操作。定义了六项研究优先事项:(1) 转向连续单程或CSTR配置并集成产品分离,(2) 标准化测试协议和参考木质素及统一分析方法,(3) 全面反应器设计规范,(4) 开发稳定的无贵金属电极,(5) 集成连续下游分离技术,(6) 与石化基准对比的系统技术经济和生命周期评估。该路线图将电化学木质素增值从实验室推进至工业化 readiness,这对循环碳经济战略和化学工业去石化化至关重要。
Keyword:
anodic oxidation
electrochemical advanced oxidation processes
flow electrochemistry
Green Chemistry
hydrogen
lignin valorization
platform chemicals
vanillin
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ChemElectroChem 封面图
ChemElectroChem
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fraunhofer-institute for chemical technology ict
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