Theoretical and experimental study on the inhibition of jet fuel oxidation by diarylamine

• Published in: Chinese journal of chemical engineering Vol. 56; no. 4; pp. 225 - 232
• Main Authors: Jia, Tinghao, Yu, Yunbo, Liu, Qing, Yang, Yao, Zou, Ji-Jun, Zhang, Xiangwen, Pan, Lun
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.04.2023; ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311200,China%Key Laboratory for Green Chemical Technology of the Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China%Key Laboratory for Green Chemical Technology of the Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China; Key Laboratory for Green Chemical Technology of the Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China%Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China; Haihe Laboratory of Sustainable Chemical Transformations,Tianjin 300192,China; Zhejiang Provincial Key Laboratory of Advanced Chemical Engineering Manufacture Technology,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China; ZJU-Hangzhou Global Scientific and Technological Innovation Center,Zhejiang University,Hangzhou 311200,China
• Subjects: Antioxidation mechanism; Diarylamine; High-energy–density fuel; Jet fuel; Thermal oxidation stability; Diarylamine; Thermal oxidation stability; High-energy–density fuel; Jet fuel; Antioxidation mechanism; High-energy-density fuel
• ISSN: 1004-9541; 2210-321X
• DOI: 10.1016/j.cjche.2022.09.015

[Display omitted] Antioxidants addition is believed as a facile and effective way to improve jet fuel thermal oxidation stability. However, amine antioxidants, as one of the most important antioxidants, have not received sufficient attention in the field of jet fuel autoxidation yet. Herein, the inhibition efficiency and mechanism of decane and exo-tetrahydrodicyclopentadiene (THDCPD) oxidation by di-4-tert-butylphenylamine (diarylamine) was experimentally and theoretically investigated. The results show that diarylamine can significantly inhibit decane oxidation but is less efficient for THDCPD oxidation, which is attributed to the higher energy barrier of retro-carbonyl-ene reaction (rate-determining step) in THDCPD than that in decane during diarylamine regeneration. However, the addition of diarylamine will cause undesirable color change after accelerated oxidation and produce slightly more deposits during high-temperature thermal oxidative stress for both decane and THDCPD. The results provide significant implications for the future design of effective antioxidant additives for high-performance jet fuel.