木质素作为可再生的、产量最大的芳香族有机化合物，是石油基能源、材料和化学品的潜在替代原料，却因为降解条件苛刻、产物复杂成为生物质三大组分中最难利用的部分。本项目利用木质素Cα醇氧化为Cα酮可促进邻位β-O-4醚键断裂这一重大发现，以成本低、效率高、过程简单且易于工业的电芬顿体系为手段，综合利用ESR技术、DCFH法、电化学法等方法，通过电芬顿处理条件对木质素的氧化过程和降解机理研究，借鉴木质素模型化合物C-O-C键水解反应动力学和条件，将木质素Cα醇选择性氧化为Cα酮，构建预氧化木质素在有机酸、胺或氧化剂环境下，低温水相断裂木质素β-O-4醚键的反应路径，确定预氧化木质素降解条件和降解产物化学反应活性之间的关系，高得率获得高反应活性的芳香族单体，为木质纤维原料组分的分离（制浆）或木质素改性高值化利用提供一种通用型方法，解决木质素难以降解和降解产物化学反应活性低难以利用的瓶颈问题。

Lignin, which is the second most abundant nature polymers to cellulose and the most abundant nature aromatic polymers, is renewable source and alternative of energy, material and chemical based on fuel. Whereas the rigid condition of depolymerization and complexity of the degradative products hinder the further utilization of lignin. Due to a significant discover that it oxidates hydroxy to carbonyl at Cα position in lignin can accelerate the cleavage of β-O-4, this project aims to establish a low cost and effective pathway for high reactivity aromatic monomer via depolymerization of per-oxidation lignin (POL) obtained by oxidating hydroxy to carbonyl at Cα site. Introducing electro-fenton to depolymerization is simply and apt to industrialization, ERR, DCFH and electro chemistry are also used to study the mechanism oxidation and degradation process of lignin. It is designed in mild aqueous phase with organic acid, amino or oxidizing agent to break ether bond, such as β-O-4. That it will be determined the correlation between depolymerization condition of POL and the reactivities of the degradation products is provided a broad-spectrum high value-added method for separating lignocellulose (pulping), solving the annoying bottlenecks of degradation and low reactivity of degradation products of lignin.