Abstract Lignin biochar-catalytic depolymerization using biochar Fe-600, Fe-800, Ni-600, Ni-800 catalysts under microwave-heating (180 °C for 30 min) was explored in an ethanol/formic acid (1:1) media. Non-catalyst depolymerization was also studied and compared with the biochar-catalysts results. Characteristics of the bio-char catalysts were analyze by BET, XRD, and FT-IR. GPC, FT-IR, and MALDI-TOF MS spectrometry were also used to characterize the depolymerization products. The experimental results showed that the SBET, Vt, and Vmec and average pore diameter of the biochars are considerably dependent on the preparation temperature and type of cation (Ni2+ or Fe3+). The maximum yield of bio-oil product was obtained as 85 wt% with the addition of biochar Ni-600 and the total amount of oligomers or monomers with a molecular weight of 164 to 446 reaches 80.4%.

中文翻译：

---

竹炭-微波加热催化降解木质素

摘要 使用生物炭 Fe-600、Fe-800、Ni-600、Ni-800 催化剂在乙醇/甲酸 (1:1) 介质中在微波加热（180 °C 30 分钟）下进行木质素生物炭催化解聚研究. 还研究了非催化剂解聚并与生物炭催化剂结果进行了比较。通过BET、XRD和FT-IR分析了生物炭催化剂的特性。GPC、FT-IR 和 MALDI-TOF MS 光谱也用于表征解聚产物。实验结果表明，生物炭的 SBET、Vt 和 Vmec 以及平均孔径在很大程度上取决于制备温度和阳离子类型（Ni2+ 或 Fe3+）。