Synthesis of high density and low freezing point jet fuels range cycloalkanes with cyclopentanone and lignin-derived vanillins  

作　　者：Xinghua Zhang Miaojia Song Jianguo Liu Qi Zhang Lungang Chen Longlong Ma 

机构地区：[1]Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education,School of Energy and Environment,Southeast University,Nanjing 210096,Jiangsu,China

出　　处：《Journal of Energy Chemistry》2023年第4期22-30,共9页能源化学（英文版）

基　　金：funded by grants from the National Natural Science Foundation of China(No.52236010,51876210);the Fundamental Research Funds for the Central Universities(No.2242022R10058)。

摘　　要：In this work,a“cyclopentanone-vanillin”strategy was proposed for the preparation of jet fuel range cycloalkanes from lignocellulose-derived ketones and lignin-derived aldehydes via aldol condensation and hydrodeoxygenation(HDO).Ethanolamine lactate ionic liquid(LAIL)exhibited excellent catalytic activity in the aldol condensation of cyclopentanone and vanillin.Desired mono-condensation and bicondensation products were obtained with yield of 95.2%at 100℃.It is found that the synergy effects between amino group of ethanolamine and hydroxyl group of lactic acid play a key role in the aldol condensation.The condensation products were converted into cycloalkanes by HDO over 5%Pd/Nb_(2)O_(5)catalyst.The density of the obtained HDO products is 0.89 g/cm^(3)and the freezing point is lower than-60℃.These results suggest that the resulted cycloalkanes can be used as additives to improve the density and low-temperature fluidity of the jet fuels.

关 键 词：Aldol condensation Cyclopentanone-vanillin Ionic liquid catalysts HYDRODEOXYGENATION Jet fuel 

分 类 号：TQ517.2[化学工程]