废弃生物油脂热化学转化制备清洁航空燃油，对于实现油料供给的多样化，推动清洁能源的发展有重要意义。通过热化学催化的方法控制油脂结构进行多级演化，是油脂资源向航空烃类燃油转化的重要发展趋势。本项目在已完成基金项目的成果基础上，依据油脂脱氧重整形成直链烃类化合物、介孔材料微结构与裂解产物构效关系、以及裂解燃油优异低温流动性能等重要发现，在初步建立的裂解-精馏耦合新方法基础上，进一步研究耦合过程中的反应参数、动态热平衡关系、分离效率等协同作用对油脂裂解产物分子尺寸的控制机制；深入探讨具有结构导向作用的介孔-微孔复合材料催化油脂向直链烃、芳烃、环烷烃等航空燃油关键组分定向转变过程中的中间态模式、自由能变化规律，以及结构演化的过程机理；阐明生物航空燃料组成、结构与燃料性能之间的关联性，揭示生物航空燃料在航空燃气涡轮发动机中的燃烧特性与规律，为全组分替代石化航空燃油提供一条现实可行的研究路径。

Preparation of bio jet fuel from waste triglycerides is of great significance to promote the development of clean energy industry and the diversification of oil supply. The key issue for the modification of molecular structure of triglycerides to produce bio jet fuel will be solved by using a stepwise catalytic methodology. Building upon our previous discoveries, such as the formation of the hydrocarbon fuels by basic catalytic reaction, the relationship between the structure of catalyst and the pyrolytic products and excellent cold flow properties of the liquid product, this project will study the fundamental mechanisms and methods for the carbon chain formation, accompanying with reaction parameters, heat balance and separation efficiency. A new type of mesoporous catalysts with higher reactivity and better thermal stability will be developed to establish the catalytic system for production of aromatic products and cyclo-hydrocarbons. In addition, by studying the effect of bio jet-fuel composition on the performance of jet engine, the relationship of the fuel properties with the fuel supplement system and combustion properties will be illustrated. This project will develop an effective solution and provide a solid scientific basis for predicable conversion of triglycerides into high grade bio jet-fuels through thermochemical processes.