Catalytic fast pyrolysis of biomass is an effective strategy for the preparation of high value-added liquid fuels or chemicals. Understanding the effects of different biomass materials on the physicochemical property changes of ZSM-5 is important for the design of modified catalysts and targeted regulation of products. In this study, the catalytic upgrading of lignocellulosic biomass over ZSM-5 was investigated. Lignin, cellulose and xylan were used as model compounds of lignocellulosic biomass, and the upgraded products were analyzed online. Several techniques were used to gain a deep understanding of the physiochemical changes in ZSM-5. The results showed that the addition of ZSM-5 contributed to the production of aromatic hydrocarbons and olefins. The crystal structure and morphology of ZSM-5 were not changed, but the total acid, Brønsted and Lewis acid contents decreased. The amount of coke deposited on ZSM-5 follows the order cellulose/ZSM-5 > xylan/ZSM-5 > lignin/ZSM-5. Coke on cellulose/ZSM-5 has the lowest H/C ratio of 0.50. Coke on ZSM-5 will create new micropores and increase the specific surface area of micropores.

生物质的催化快速热解是制备高附加值液体燃料或化学品的有效策略。理解不同生物质材料对ZSM-5的理化性质变化的影响，对于改性催化剂的设计和产物的目标调节至关重要。在这项研究中，研究了木质纤维素生物质在ZSM-5上的催化提质。木质素，纤维素和木聚糖用作木质纤维素生物质的模型化合物，并对升级产品进行在线分析。使用了几种技术来深入了解ZSM-5的理化变化。结果表明，ZSM-5的加入有助于芳烃和烯烃的生产。ZSM-5的晶体结构和形态没有改变，但总酸，布朗斯台德和路易斯酸含量下降。沉积在ZSM-5上的焦炭的数量顺序为：纤维素/ ZSM-5>木聚糖/ ZSM-5>木质素/ ZSM-5。纤维素/ ZSM-5上的焦炭的最低H / C比为0.50。ZSM-5上的焦炭将产生新的微孔并增加微孔的比表面积。