Effect of phenolic antioxidants on the thermal oxidation stability of high-energy-density fuel

被引:19
|
作者
Jia, Tinghao [1 ,2 ,3 ]
Zhao, Mengchao [1 ,2 ]
Pan, Lun [1 ,2 ]
Deng, Chuan [4 ]
Zou, Ji-Jun [1 ,2 ]
Zhang, Xiangwen [1 ,2 ]
机构
[1] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China
[2] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China
[3] Zhejiang Univ, Hangzhou Innovat Ctr, Hangzhou 311200, Peoples R China
[4] Second Res Inst Civil Aviat Adm China, Chengdu 610200, Sichuan, Peoples R China
基金
中国国家自然科学基金;
关键词
High-energy-density fuel; Phenolic antioxidant; Kinetics; Thermal oxidation; Thermal deposition; GAS-CHROMATOGRAPHY; JET FUEL; AUTOXIDATION; ADDITIVES; CHEMISTRY; MECHANISM; KINETICS; OXYGEN;
D O I
10.1016/j.ces.2021.117056
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
The addition of antioxidants is normally adopted to improve the thermal oxidation stability of jet fuel, but the detailed antioxidation mechanism is still ambiguous. Herein, the inhibition of exo- tetrahydrodicyclopentadiene (the main component of JP-10) toward thermal oxidation and deposition by phenolic antioxidants (2,6-di-tert-butyl-4-methyphenol (BHT), 6-tert-butyl-2,4-dimethyphenol (TBDP), 2,6-di-tert-butylphenol (DTBP), 2-tert-butyl-4-methoxyphenol (BHA) and 2-tert-butyl-4-methylphenol (TBMP)) was investigated to reveal antioxidation mechanism and screen the best antiox-idant for high-energy-density fuel. The theoretical and experimental results show that the addition of all phenolic antioxidants can significantly inhibit fuel oxidation and prolong the shelf life. Importantly, TBDP and TBMP show better performance than other antioxidants since they can scavenge more radicals per antioxidant molecule. However, antioxidants form dimer products via the addition between phenoxyl radicals and alkyl radicals during short-term thermal stress, which has a higher tendency to produce deposits. Consequently, the addition of phenolic antioxidants causes more severe deposition when jet fuel serves as the coolant in aircrafts. This work would guide the rational design of antioxidant for prac-tical application in high-energy-density fuel. (c) 2021 Elsevier Ltd. All rights reserved.
引用
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页数:12
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