Abstract The present study aims to produce bio-fuel from lignin via catalytic upgrading of vapors from lignin microwave pyrolysis. The effects of cobalt modified ZSM-5 catalysts on products yield and chemical selectivity of bio-oils were investigated. A central composite experimental design (CCD) was used to optimize the reaction conditions for bio-fuel production. The effects of the reaction temperature and ratio of catalyst to lignin on products (bio-oil, gas and volatiles) yield distribution and chemical composition of bio-oil were investigated. Response surface analysis indicated that the obtained models were able to predict the products yield distribution and the major chemical compound distribution of the bio-oil. GC/MS analysis revealed that the main chemical compounds were ketones, furans, phenols and guaiacols, which accounted for more than 85% in the detected bio-oil. GC analysis showed that the major components of the gas were H2 and CO (about 60%).

中文翻译：

---

Co/ZSM-5上木质素的异位催化微波热解升级生物油

摘要 本研究旨在通过催化升级木质素微波热解产生的蒸汽，从木质素生产生物燃料。研究了钴改性ZSM-5催化剂对生物油产品收率和化学选择性的影响。中心复合实验设计 (CCD) 用于优化生物燃料生产的反应条件。研究了反应温度和催化剂与木质素的比例对生物油产品（生物油、气体和挥发物）产率分布和化学成分的影响。响应面分析表明，所获得的模型能够预测生物油的产品产量分布和主要化合物分布。GC/MS 分析显示主要化合物为酮类、呋喃类、酚类和愈创木酚类，在检测到的生物油中占85%以上。GC 分析表明，气体的主要成分是 H2 和 CO（约 60%）。