木质纤维水热液化研究进展

水热液化是木质纤维生物质的热转化方法之一, 其因以水作为溶剂被认为是环境友好型技术。本文综述了木质纤维生物质水热液化的研究进展, 对木质纤维生物质的水热液化产物分析策略进行概述。分析了纤维素、半纤维素和木质素等木质纤维生物质组分的水热液化机理以及水热液化产物组成和分布。讨论了反应温度、反应时间、催化剂和助溶剂等对木质纤维水热液化的影响, 重点介绍了生物油、不凝性气体和固体残渣等液化产物的表征手段。最后对未来木质纤维水热液化发展方向提出了建议。

Research Progress on Hydrothermal Liquefaction of Lignocellulosic Fiber

Hydrothermal liquefaction was one of the thermochemical conversions of lignocellulosic biomass. It was considered as an environmentally friendly technology for using water as a solvent. In this review, research progress in hydrothermal liquefaction of lignocellulosic biomass in recent years was summarized and discussed. Analysis strategies of hydrothermal liquefaction products of lignocellulosic biomass were introduced. The hydrothermal liquefaction mechanism of lignocellulosic biomass, such as cellulose, hemicellulose and lignin, and composition and distribution of hydrothermal liquefaction products were analyzed. The effects of reaction temperature, reaction time, catalyst and co-solvent on hydrothermal liquefaction of lignocellulosic biomass were discussed. The characterization methods of liquefaction products such as biological oil, incoagulable gas and solid residue were introduced emphatically. Finally, suggestions were performed on the future development direction of wood fiber hydrothermal liquefaction.