Diverse lignin samples have been subjected to a catalytic aerobic oxidation process, followed by formic-acid-induced hydrolytic depolymerization. The yield of monomeric aromatic compounds varies depending on the lignin plant source and pretreatment method. The best results are obtained from poplar lignin isolated via a acidolysis pretreatment method, which gives 42 wt% yield of low-molecular-weight aromatics. Use of other pretreatment methods and/or use of maple and maize lignins afford yields of aromatics ranging from 3 to 31 wt%. These results establish useful references for the development of improved oxidation/depolymerization protocols.

中文翻译：

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通过有氧氧化水解序列将木质素转化为低分子量芳烃：不同木质素来源的比较

各种木质素样品已经进行了有氧催化氧化过程，然后进行了甲酸诱导的水解解聚反应。单体芳族化合物的产率取决于木质素植物来源和预处理方法。从通过酸解预处理方法分离的杨木木质素可获得最佳结果，该方法可提供42 wt％的低分子量芳烃收率。使用其他预处理方法和/或使用枫木和玉米木质素可获得3至31 wt％的芳烃收率。这些结果为开发改进的氧化/解聚方案提供了有用的参考。