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Accession Number
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ADA564573
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Title
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Supercritical Fuel Pyrolysis.
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Publication Date
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May 2010
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Media Count
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88p
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Personal Author
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M. J. Wornat
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Abstract
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Supercritical pyrolysis experiments were conducted with the two-ring model fuel 1-methylnaphthalene at 585 C and pressures of 50 to 110 atm and at 80 atm and temperatures of 550 to 600 C. Quantification of the product polycyclic aromatic hydrocarbons (PAH) by high-pressure liquid chromatography (HPLC) showed linear increases in PAH yields with increasing pressure; with increasing temperature, rates of PAH yield increases rose steadily. Higher- temperature supercritical pyrolysis experiments with toluene showed that 700 C, the highest temperature of the reactor, was not hot enough to break aromatic C- C bonds in the supercritical fuel pyrolysis environment. Supercritical pyrolysis experiments were conducted with the model alkane fuel n-decane at 570 C and pressures of 40 to 100 atm and at 100 atm and temperatures of 530 to 570 C. Application of a newly developed normal-phase HPLC fractionation / reversed- phase HPLC analysis technique led to the identification of 276 individual product PAH of up to 9 aromatic rings many of which were first-time identifications as products of n-decane. Quantification of the PAH products showed exponential increases in PAH yields with increasing pressure or increasing temperature. Yields increased the most sharply for the highest-ring- number PAH, immediate precursors to carbonaceous solids.
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Keywords
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1- methylnaphthalene
Aromatic compounds
Aromatic hydrocarbons
Aviation fuels
Carbonaceous solid deposits
Component reports
High- pressure liquid chromatography
Hypersonic aircraft
Jet engine fuels
Liquid chromatography
N-decane
Pah formation chemistry
Pah(Polycyclic aromatic compounds)
Polycyclic aromatic hydrocarbons
Pyrolysis
Reaction kinetics
Reaction mechanisms
Supercritical flow
Supercritical fuel pyrolysis
Supercritical pyrolysis
Synthetic jet fuel
Toluenes
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Source Agency
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Non Paid ADAS
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NTIS Subject Category
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99D - Basic & Synthetic Chemistry
99F - Physical & Theoretical Chemistry
97K - Fuels
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Corporate Author
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Louisiana State Univ., Baton Rouge. Dept. of Chemical Engineering.
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Document Type
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Technical report
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Title Note
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Final technical rept. 1 Dec 2006-30 Nov 2009.
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NTIS Issue Number
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1303
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Contract Number
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FA9550-07-1-0033
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