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Degradation mechanisms of sulfur and nitrogen containing compounds during thermal stability testing of model fuelsThe degradation behavior of n-dodecane (singly or in combination with S- and N-containing dopants) was studied using a modified Jet Fuel Thermal Oxidation Tester facility between 200 and 400 C. The products were analyzed by gas chromatography and mass spectrometry. The soluble products consisted mainly of n-alkanes and 1-alkenes, aldehydes, tetrahydrofuran derivatives, dodecanol and dodecanone isomers, C21-C24 alkane isomers, and dodecylhydroperoxide (ROOH) decomposition products. The major products were always the same, with and without dopants, but their distributions varied considerably. The 3,4-dimercaptotoluene and dibutylsulfide dopants added individually to n-dodecane interferred with the hydrocarbon oxidation at the alkylperoxy radical and the alkylhydroperoxide link, respectively, while the 2,5-dimethylpyrrole dopant inhibited ROOH formation. Pyridine, pyrrole, and dibenzothiophene added individually showed few significant effects.
Document ID
19870058098
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Reddy, K. T.
(Drexel Univ. Philadelphia, PA, United States)
Cernansky, N. P.
(Drexel University Philadelphia, PA, United States)
Cohen, R. S.
(Temple University Philadelphia, PA, United States)
Date Acquired
August 13, 2013
Publication Date
June 1, 1987
Subject Category
Propellants And Fuels
Report/Patent Number
AIAA PAPER 87-2039
Accession Number
87A45372
Funding Number(s)
CONTRACT_GRANT: NAG3-183
Distribution Limits
Public
Copyright
Other

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