N-Heptane Pyrolysis and Oxidation in Ethylene–Methane and Iso-Octane Mixtures

Fridlyand, Aleksandr; Brezinsky, Kenneth; Mandelbaum, Andrew

doi:10.2514/1.b34875

Cited by 8 publications

(11 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Experimental Methodsmentioning

confidence: 99%

“…Pyrolysis and oxidation experiments of ATJ were conducted in the LPST and HPST at UIC. The LPST and HPST and the experimental procedure for each shock tube have been discussed in detail by Fridlyand et al 28 and Tranter et al 29 ; therefore, only a short discussion will be given. The LPST consists of a 1219 mm long driver section and a 4420 mm driven section.…”

Section: Experimental Methodsmentioning

confidence: 99%

“…Tranter et al 30 explain the chemical thermometer technique used to calibrate the experimental temperature for the HPST, which employs a chemical compound with a well-known decomposition reaction pathway that can be used in the same shock tube with the same experimental conditions of initial temperature and pressure being used for the present experiments. Following the test procedures, 30 Fridlyand et al 28 accommodated this technique for the LPST which provides the initial test temperature. Malewicki and Brezinsky 31 have discussed in detail the preparation of the fuel mixture, and only a brief discussion will be given below.…”

Section: Experimental Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Oxidation of an iso‐paraffinic alcohol‐to‐jet fuel and n‐heptane mixture: An experimental and modeling study

Guzman

Kukkadapu

Brezinsky

et al. 2021

Int J of Chemical Kinetics

Self Cite

View full text Add to dashboard Cite

Oxidation of alcohol to jet (ATJ)/n‐heptane blends was studied over a wide range of test conditions, using single pulse shock tubes. Test conditions were designed to study the effect of pressure (4 and 50 bar), and fuel loading (∼100 to 1400 ppm) on the oxidation of the blends across a wide range of temperatures (800–1300 K). These effects were observed by measuring concentrations of intermediate species formed using in‐line gas chromatography (GC) and GCxGC TOF‐MS. Results showed that increasing the initial fuel load does not have a significant impact on the results. However, increasing the pressure shifts the mixture reactivity to a lower temperature by about 150 K and causes the fuel to be oxidized instead of decomposing pyrolytically as at lower pressures. Additional experiments for pure ATJ and pure n‐heptane were performed at conditions matching the ATJ/n‐heptane 50 bar experiments to analyze the differences between the pure and mixed fuels. Speciation measurements were compared against predictions from a detailed kinetic model. The ability of the kinetic model to capture the effects of varying experimental test conditions on the evolution of intermediate species is discussed, and kinetic analyses have been conducted to identify the important reaction pathways.

show abstract

Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

Section: Experimental Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Oxidation of an iso‐paraffinic alcohol‐to‐jet fuel and n‐heptane mixture: An experimental and modeling study

Guzman

Kukkadapu

Brezinsky

et al. 2021

Int J of Chemical Kinetics

Self Cite

View full text Add to dashboard Cite

show abstract

“…A large number of previous studies have been completed regarding the combustion and oxidation of iso-octane and n -heptane in shock tubes, jet-stirred reactors, and flow reactors. The NTC regions of iso-octane and n -heptane oxidation were not observed in shock tubes. , The temperature of shock tubes is high and suitable for medium and high temperature regimes. Therefore, it is not feasible to study an NTC in the low temperature region in a shock tube.…”

Section: Introductionmentioning

confidence: 93%

“…The NTC regions of iso-octane and n-heptane oxidation were not observed in shock tubes. 31,32 The temperature of shock tubes is high and suitable for medium and high temperature regimes. Therefore, it is not feasible to study an NTC in the low temperature region in a shock tube.…”

Section: Introductionmentioning

confidence: 99%

Oxidation of Ethanol Blended Gasoline Surrogates in a Flow Reactor

et al. 2019

View full text Add to dashboard Cite

The oxidation of ethanol blended with gasoline surrogates, a mixture of iso-octane and n-heptane, was studied in a flow reactor to evaluate the influence of ethanol content and oxygen concentration on the oxidation behaviors of reactants and the emissions of methanol, formaldehyde, and acetaldehyde. The blend with 10% ethanol content accelerated the emergence of the negative temperature coefficient region of iso-octane and n-heptane. The emissions of formaldehyde and acetaldehyde increased with the increasing ethanol content. Increasing the oxygen concentration from 10% to 21% led to increased emissions of methanol, acetaldehyde, and formaldehyde. With the oxygen concentration from 21% to 30%, methanol and acetaldehyde emissions decreased. The sources of aldehydes were explored and were found to be formed from different sources in different temperature regions. At low temperature, acetaldehyde was partially derived from ethanol oxidation and partially from nheptane oxidation; formaldehyde emission was mainly contributed to by ethanol oxidation. At high temperature, acetaldehyde was mainly produced from ethanol oxidation; formaldehyde was partially formed from iso-octane oxidation and partially from the consumption of methanol.

show abstract