Lv Xianqing, Zhao Chengke, Yan Ning, Ma Xinbing, Feng Shixing, Shuai Li
College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002 Fujian, China.
College of Materials Engineering, Fujian Agriculture and Forestry University, Fuzhou 350002 Fujian, China.
Bioresour Technol. 2025 Mar;419:132039. doi: 10.1016/j.biortech.2025.132039. Epub 2025 Jan 4.
The aviation industry plays a crucial role in global trade and cultural exchange, but it faces significant challenges due to high production cost and environmental impacts. To achieve carbon neutrality, promoting the development of sustainable aviation fuel (SAF) is essential, with projections indicating that 65% of emissions reductions in the aviation industry by 2050 will come from the use of SAF. Lignin, as an abundant renewable resource, has great potential for conversion into aviation fuel components. It can be depolymerized and/or hydrodeoxygenated (HDO) to produce C6-C9 alkanes. However, to produce high-density SAF, lignin monomers need to undergo coupling, alkylation, and transalkylation reactions to extend the carbon chain to C8-C16 precursors, which can then be converted into long-chain alkanes suitable for SAF through HDO reactions. This paper reviews the research progress on synthesis of lignin-based SAF, highlights key synthetic methods, and analyzes how catalyst and reaction conditions affect the synthesis pathways, efficiency, and properties of SAF. Additionally, the obstacles and challenges hindering the development of biomass-based SAFs are discussed to provide theoretical support for future research in this field.
航空业在全球贸易和文化交流中发挥着至关重要的作用，但由于生产成本高昂和环境影响，它面临着重大挑战。为了实现碳中和，促进可持续航空燃料（SAF）的发展至关重要，据预测，到2050年航空业65%的减排将来自SAF的使用。木质素作为一种丰富的可再生资源，具有转化为航空燃料成分的巨大潜力。它可以进行解聚和/或加氢脱氧（HDO）以生产C6 - C9烷烃。然而，为了生产高密度SAF，木质素单体需要进行偶联、烷基化和烷基转移反应，将碳链延长至C8 - C16前体，然后通过HDO反应将其转化为适用于SAF的长链烷烃。本文综述了基于木质素的SAF合成的研究进展，突出了关键合成方法，并分析了催化剂和反应条件如何影响SAF的合成途径、效率和性能。此外，还讨论了阻碍生物质基SAF发展的障碍和挑战，为该领域未来的研究提供理论支持。
