关键词: 糠醛, 生物航空燃料, 羟醛缩合, 加氢

Abstract: Based on the technical route of aldol condensation, hydrogenation saturation, and hydrodeoxygenation, the green and efficient preparation of bio-aviation fuel components with furfural as raw material has been achieved. For the aldol condensation reaction, a green process for the efficient production of 1,5-bis(2-furanyl)-1,4-pentadien-3-one (FAF) using recycled alkali solution has been developed, precisely regulating the carbon chain to meet the carbon number distribution requirements of aviation fuel, the yield of FAF reached 98.3% with a purity of 99.2%. For the hydrogenation reaction, Ni@SiO2 catalyst was designed, where the coordination unsaturated Ni enhances the adsorption of FAF molecules, and the nano-dispersed Ni ensures high activity of the catalyst. The yield of the hydrogenation saturation product 1,5-bis-(furfuryl)-3-pentanol reached 99.9%. For the hydrogenation deoxygenation reaction, Pd/Nb₂O₅-SiO₂ catalyst was developed. When the Pd mass fraction is 0.3% and the Nb₂O₅ mass fraction is 20%, the catalyst exhibits optimal hydrogenation deoxygenation performance, achieving a C₁₁－C₁₃ alkane yield of 96.2%. Finally, the blending formula of aviation fuel products was optimized. When the mass fraction of produced aviation fuel component is 10%, the blended product meets the GB 6537—2018.

Key words: furfural, bio-aviation fuel, aldol condensation, hydrogenation